Ph.D. Alumni List

List of OSU Mathematics Ph.D. Graduates

YearNameDegreeAdvisorThesis/Paper title
2008Strowbridge, JessicaPh.D.Thomas P. DickMiddle School Teachers' Use of a Formative Feedback Guide in Mathematical Problem Solving Instruction
2007Ghimire, Kailash C.Ph.D.Dennis J. GarityAn intrinsic codimension two cellular decomposition of the Hilbert cube
2007Ramirez, Jorge M.Ph.D.Thomann, E. A. and Waymire E. C.Skew Brownian motion and branching processes applied to diffusion-advection in heterogenous media and fluid flow
2007Wangberg, Aaron D.Ph.D.Tevian DrayThe structure of E6
2006Constantinescu, Corina D.Ph.D.Enrique A. ThomannRenewal risk processes with stochastic returns on investments : a unified approach and analysis of the ruin probabilities
2005Gratton, Larry A.Ph.D.Adel FaridaniNonuniform sampling problems in computed tomography
2004Orum, John ChristopherPh.D.Edward C. WaymireBranching processes and partial differential equations
2003Bell, Andrea MoreiraPh.D.Thomas A. SchmidtHilbert modular surfaces and uniformizing groups of klein invariants
2003Black, WendyPh.D.Ronald B. GuentherConstruction and numerical simulation of a two-dimensional analogue to the KdV equation
2003Lin, FuSen F.Ph.D.Larry Lung-Kee ChenNumerical inversion of laplace transforms by the trapezoidal-type methods
2002Kang, Dong SeungPh.D.Reichstein, Z.Trace forms and self-dual normal bases in Galois field extensions
2002Kim, Seong KunPh.D.William A. BogleyAsphericity of length 6 equations over torsion free groups
2001Fassett, Jonathon E.Ph.D.Richard SchoriInverse limits and full families
2001Georgieva, Bogdana A.Ph.D.Ronald B. GuentherNoether-type theorems for the generalized variational principle of Herglotz
2001Glantz, Wayne L.Ph.D.Larry Lung-Kee ChenA singular integral operator along a hypersurface
2000Biskup, Igor MarkoPh.D.William A. BogleyLogical implications between different flavors of asphericity
2000Dixon, LeonardPh.D.McDougal, W. G.The equations of motion of a deformable saturated porous medium with micropolar structure
2000Fredericks, Julia D.Ph.D.William A. BogleyLocal indicability and relative presentations of groups
2000Kaul, AntonPh.D.William A. BogleyRigidity for a class of Coxeter groups
2000Le, Hung VietPh.D.Larry Lung-Kee ChenMaximal operators along surfaces of revolution
2000Lee, HankuPh.D.Ronald B. GuentherThe existence and uniqueness of solutions in a weighted Sobolov space for an initial-boundary problem of a degenerate parabolic equation with principal part in divergence form
2000Smith, Katherine M.Ph.D.Thomas A. SchmidtPrincipal subgroups of the nonarithmetic Hecke triangle groups and Galois orbits of algebraic curves
1999Agnew, Alfonso F.Ph.D.Tevian DrayDistributional modes for quantum field theory in curved spacetimes
1999Behmard, Hamid R.Ph.D.Adel FaridaniNonperiodic sampling theorems and filter banks
1999Lan, Ih-RenPh.D.David V. FinchOn an operator associated to a resticted x-ray transform
1999Limmer, Douglas JamesPh.D.Robson, R.Measure-equivalence of quadratic forms
1998Krouss, Paul R.Ph.D.Robert M. BurtonDependent site percolation models
1998Fischer, James P.Ph.D.Tevian DrayA new look at the Ashtekar-Magnon energy condition
1997Plaehn, David C.Ph.D.Robert M. BurtonOne-dimensional Kohonen maps are super-stable with exponential rate
1997Zandieh, Michelle J.Ph.D.Thomas P. DickThe evolution of student understanding of the concept of derivative
1996Hale, Patricia L.Ph.D.Thomas P. DickBuilding conceptions and repairing misconceptions in student understanding of kinematic graphs : using student discourse in calculator based laboratories
1996Utter, Frederick W.Ph.D.Thomas P. DickRelationships among AP calculus teachers' pedagogical content beliefs, classroom practice, and their students' achievement
1995Danielson, Lynda MajorPh.D.Burton FeinThe galois theory of iterated binomials
1995Nam, KiwonPh.D.Dennis J. GarityDetecting piecewise linear approximate fibrations
1995Senkyrik, MartinPh.D.Ronald B. GuentherA topological approach to dry friction and nonlinear beams
1995Zhang, QingPh.D.Edward C. WaymireSome tree structure function asymptotics
1994Boersma, Stuart F.Ph.D.Tevian DrayParametric manifolds
1994Krussel, Carolyn E. S.Ph.D.Thomas P. DickVisualization and reification of concepts in advanced mathematical thinking
1994Maxwell, Mark M.Ph.D.Edward C. WaymireAsymptotic enumeration for combinatorial structures
1994Treuden, Mark RichardPh.D.Firey, W. J.Collision probabilities of convex polygons in spherical two-space
1994White, Peter W.Ph.D.Weideman, A.The Davey-Stewartson equations : a numerical study
1993Cho, Yong-KumPh.D.Larry Lung-Kee ChenMultiparameter maximal operators and square functions on product spaces
1993Park, Young KouPh.D.Donald C. SolmonOn perturbation and location of roots of polynomials by Newton's interpolation formula
1992Goulet, MarcPh.D.Robert M. BurtonOne-dependence and k-block factors
1992Hagelberg, Carl R.Ph.D.Bennett, A.Existence of a solution to a variational data assimilation method in two-dimensional hydrodynamics
1992Jubran, Isa S.Ph.D.Shori, R. and Garity, D.Chaotic embedding of the Whitehead continuum
1991Choi, In-kyeongPh.D.Robert M. BurtonOn straight line representations of random planar graphs
1991Crow, John A.Ph.D.Ronald B. GuentherA nonlinear shallow water wave equation and its classical solutions of the cauchy problem
1991Hart, Dianne K.Ph.D.Thomas P. DickBuilding concept images supercalculators and students' use of multiple representations in calculus
1991Hwang, Dae-sikPh.D.Robert M. BurtonLarge deviation principles for random measures
1990Andersen, Robert NelsPh.D.Richard SchoriHomotopy construction techniques applied to the cell like dimension raising problem and to higher dimensional dunce hats
1990Bodvarsson, Gudrun M.Ph.D.Ronald B. GuentherSolutions to some linear evolutionary systems of equations : study of the double porosity model of fluid flow in fractured rock and its applications
1990Shea, Edward CarlPh.D.Burton FeinMinimal simultaneous embeddings of central simple algebras
1989Park, Tae-soonPh.D.Ronald B. GuentherNonlinear free boundary problems arising from melting processes
1988Franzosa, Marie M.Ph.D.Robert M. BurtonDensities and dependence for point processes
1988Smith, Steven J.Ph.D.Lea F. MurphyOptimal harvesting of continuous age structured populations
1988Cavaiani, Thomas P.Ph.D. Math EdHoward WilsonAn investigation of the relationship between cognitive style and the diagnostic skills of novice COBOL student programmers
1987Rohm, Dale M.Ph.D.Richard SchoriAlternative characterizations of weak infinite-dimensionality and their relation to a problem of Alexandroff's
1986Hazou, Irene A.Ph.D.Donald C. SolmonThe exponential X-ray transform
1986Helfenstein, Franz HugoPh.D.Ronald B. GuentherA free boundary value problem modeling streambed erosion
1985Bottema, Murk J.Ph.D.Smith, K. T.Median filters and iterative noise elimination with applications to the sharpening of radiographs
1985Keinert, FritzPh.D.Smith, K. T.The divergent k-plane transform
1985Kim, Tae-sungPh.D.Robert M. BurtonCentral limit theorems for associated random fields with applications
1985O'Regan, Daniel J.Ph.D.John W. LeeInitial and boundary value problems via topological methods
1984Kharab, AbdelwahabPh.D.Ronald B. GuentherA nonlinear free boundary value problem
1983Kiser, TerryPh.D.Bodvarsson, G.Fractional powers of the Laplacian with application to small amplitude water waves
1983Mohamed, Fouad Abd El-AalPh.D.Ronald B. GuentherNonlinear free boundary problems arising from soil freezing in a bounded region
1983Treuden, Michael L.Ph.D.Philip AnseloneAsymptotically compact operator approximation theory
1982Bashir, MohommedPh.D.Francis FlahertyZero-rest-mass fields from the formula of a tube in complex projective three-space
1982Gerlach, JurgenPh.D.Ronald B. GuentherA free boundary value problem for the gas dynamic equations
1982Ojha, Murari PrasadPh.D.Goheen, H. E.Smooth approximations and quermassintegrals
1982Scarborough, Stephen D.Ph.D.David CarterA moment rate characterization for stochastic integrals
1981Okada, KanzoPh.D.Mysore NarasimhanSynthetic method in thermal boundary layer transition
1980Kim, Jong-ChulPh.D.Francis FlahertyEmbeddings of Lorentzian manifolds by solutions of the d'Alembertian equations
1980Lancaster, Kirk EugenePh.D.Bent E. PetersenOn temperate fundamental solutions with support in a nonsalient cone
1979Lodwick, Weldon A.Ph.D.Davis, J.Two numerical methods for the solutions of optimal control problems with computed error bounds using the maximum principle of pontryagin
1978Celarier, Donald AllenPh.D.Davis, J.A study of the global convergence properties of Newton's method
1978McCay, Brian M.Ph.D.Mysore NarasimhanNonlocal electromagnetic theory of fluids with applications to surface waves in a dielectric fluid
1978McGee, Keane B.Ph.D.Firey, W. J.Generalized convex bodies of revolution in n-dimensional space
1978Summers, Daniel StewartPh.D.Kas, A.On the Picard group of branched coverings of CP^2
1977Endicott, Patrick C.Ph.D.Smith, J. W.Simplicial bundles and the homology structure of submersions
1977Kelley, Thomas E.Ph.D.Mysore NarasimhanMicrocontinuum theory and orientational effects in smectic liquid crystals
1977Parker, Phillip E.Ph.D.Francis FlahertySingular geometry and geometric singularities
1977Stynes, Martin J.Ph.D.Philip AnseloneAn algorithm for the numerical calculation of the degree of a mapping
1976Dranchak, John J.Ph.D.Stuart NewbergerProperties and integral representations of distributions of operators
1976Fredricks, Gregory AlanPh.D.Andreotti, A.Higher order differential geometry and some related questions
1976Greenfield, Gary RobertPh.D.Burton FeinEven order subgroups of finite dimensional division rings
1976Kan, Joseph Ting-chePh.D.Bent E. PetersenPaley-Wiener theorems with convex weight functions
1976Matzdorff, Edward MaxPh.D.Lee, J. W. and Livingston, A. E.Gibbs phenomenon and lebesgue constants for the Quasi-Hausdorff means of double series
1976Ng, Mary Jeanne PePh.D.Burton FeinThe Zp (t)-adequacy of pure plynomials
1975Banks, Bernard WPh.D.Stuart NewbergerTime derivatives of observables and applications
1975Daily, JohnPh.D.Stalley, R. D.The distribution of certain sequences of n-Tuples of numbers Modulo 1
1975DuBeau, Donald GenePh.D.Ronald B. GuentherMathematical aspects of the flow of gases underground
1975Upatisringa, VisutdhiPh.D.Charles BallantineThe relation between complex matrices obtained by composing similarity and conjunctivity
1974Baker, Steven MichaelPh.D.Smith, J. W.Obstruction theory for simplicial bundles
1974Chang, Wei-rongPh.D.Bent E. PetersenGeneralized Hilbert transforms associated to cones in R [to the nth power]
1974Halfant, MatthewPh.D.Lonseth, A. T.Some results in the ergodic theory of generalized expansions of real numbers
1974Hartvigson, Zenas RussellPh.D.Goheen, H. E.The completeness axiom of Lobachevskian geometry
1974Sekino, JunpeiPh.D.Smith, J. W.Homology theory of submersions
1974Solmon, Donald CPh.D.Smith, K. T.The x-ray transform
1974Toms, Ralph MarvinPh.D.Davis, J.Globally optimal Runge-Kutta methods
1973Akerman, Michael WalterPh.D.Simons, W. H.Some results on k-line partitions
1973Battilega, John AnthonyPh.D.Guthrie, D.Computational improvements to Benders decomposition for generalized fixed charge problems
1973Dastrange, NassarPh.D.Stone, W. M.On the reconstruction of bandlimited signals from sampled values
1973Ghandour, Nabil NassibPh.D.Bodvarsson, G.Stability of convective flows in porous media
1973Hook, Donald GeorgePh.D.Charles BallantineEffects of conjunctivity on the inertia of complex matrices
1973Jumani, Vishnu BalchandPh.D.Stone, W. M.A study of the quantization procedure : higher order information and the conditions for minimum error
1973Ng, Dina NgPh.D.Charles BallantineAn effective criterion for congruence of real symmetric matrix pairs
1973Yip, Elizabeth LingfoonPh.D.Charles BallantineMatrices conjunctive with their adjoints
1972Applebee, Ralph CalvinPh.D.David CarterFinite models of zero order propositional calculi
1972Daily, Mary LouPh.D.Stalley, R. D.A fundamental inequality in additive number theory and some related numerical functions
1972Hofer, Jack EdwardPh.D.Brown, J. R.Topological entropy for noncompact spaces and other extensions
1972Kerrick, Jerrill DouglasPh.D.Brown, J. R.Group automorphisms of the n-torus : a representation theorem and some applications
1972Lo, Wen-soPh.D.Philip AnseloneSpectral approximation theory for bounded linear operators
1972Mueller, T. J.Ph.D.Gagliardo, E.TEEMAL, an adaptive training procedure for a two layer system of linear threshold elements
1972Murray, Peter JohnPh.D.Goheen, H. E.An extension of Hilbert's axioms of incidence and order to n dimensions
1972Pandey, Nagendra NathPh.D.Oberhettinger, F.Generalizations of the Watson transforms
1972Park, Moon UpPh.D.Mysore NarasimhanTheory of micromorphic materials and applications
1972Rivera, Dorothy MargueritePh.D.Oberhettinger, F.On a generalization of the Lerch zeta function
1972Van Enkevort, Ronald LeePh.D.Stalley, R. D.Continuous analogues of densisty theorems
1971Higdem, Roger LeonPh.D.Stalley, R. D.Sums of subsets of certain algebraic systems
1971Knoshaug, Ronald NormanPh.D.Mysore NarasimhanFlows of anisotropic fluids induced by rotating disks
1971Margolis, William EdwardPh.D.Chow, T. R.Topological vector spaces and their invariant measures
1971Okajima, IsamuPh.D.Goldstein, M.Study of the topological structure of the Royden compactification of the unit disk
1971Olson, Arthur Eugene, Jr.Ph.D.Stalley, R. D.Density space theory : discrete spaces
1971Swanson, Leonard GeorgePh.D.Chow, T. R.Equivalence of finite measures
1971Vander Beek, John WaynePh.D.Charles BallantineIsoconjunctivity of hermitian matrices
1970Alameddine, Ahmad FaouziPh.D. Auxiliary conditions for the convergence of sequences of measurable functions
1970Al-Ayat, Rokaya Abdel-GhaniPh.D.Ronald B. GuentherInitial and boundary value problem for a third order differential equation of parabolic type
1970Elwin, John DavidPh.D.Smith, J. W.Homology theories on the maping category
1970Gabrielsen, Ralph EdwinPh.D.Bodvarsson, G.Numerical aspects of the inverse Sturm-Liouville problem
1970James, Ralph LelandPh.D.Philip AnseloneConvergence of positive operators
1970Main, Robert VaughnPh.D.Goheen, H. E.A critique of the incidence and order axioms of geometry
1970Nelson, Thomas ClaytonPh.D.Goheen, H. E.Universal computing systems. Part 1, Simulation of any Normal Algorithm by Turing machine. Part 2, A universal Turing machine to translate any Turing machine to a Normal Algorithm
1970Short, Donald Ray, Jr.Ph.D.Smith, J. W.On the theorems of Sard and de Rham
1970Southam, James LewisPh.D.Simons, W. H.The generating function for three-line partitions
1970Zelver, Jack SolomonPh.D.Goheen, H. E.The integro-geometric tangent measures of euclidean n-space
1969Attia, Farag Abdel-SalamPh.D.Stone, W. M.On the distribution function of the interval between zero- crossings of a stationary Gaussian process
1969Bakhshi, Vidya SagarPh.D.Mysore NarasimhanBoundary layer transition
1969Borah, Bolindra NathPh.D.Mysore NarasimhanThermo-elastic-plastic transition
1969Gamon, Kenneth OaklandPh.D.Oberhettinger, F.The propagation of waves and pulses in the presence of conical structures
1969Green, Beryl ManfieldPh.D.Carlson, D. H.Characterizations of matrices for which certain determinantal equalities hold
1969Johnson, Robert CarlPh.D.Smith, J. W.Equivariant Stiefel-Whitney classes
1969Lindstrom, Fredrick ThomasPh.D.Stone, W. M.A mathematical model simulating mass transport of chemicals in saturated porous media
1969Middleton, William AdamsPh.D.Oberhettinger, F.Electronmagnetic radiation and heat conduction fields near coaxial conical structures
1969Seethoff, Terrance LeePh.D.Brown. J. R.Zero-entropy automorphisms of a compact abelian group
1969Wong, James TengPh.D.Stone, W. M.On the generalization of the distribution of the significant digits under computation
1968Aalto, Sergei KalvinPh.D.Philip AnseloneAn iterative procedure for the solution of nonlinear equations in a Banach space
1968Boles, John AmosPh.D.Young, F. H.The logical design of the NEBULA computer
1968Driessel, Kenneth RichardPh.D.David CarterSignificance and invariance in mathematical structures
1968Farlow, Stanley J.Ph.D.Ronald B. GuentherPeriodic solutions of parabolic partial differential equations
1968Hill, Richard DavidPh.D.Carlson, D. H.Generalized inertia theory for complex matrices
1968Hwang, John DzenPh.D.Goheen, H. E. and Slotta, L. S.On numerical solutions of the general Navier-Stokes equations for two-layered stratified flows
1968Lindquist, Norman FredPh.D.Firey, W. J.Representations of central convex bodies
1968McCoy, Michael FranklinPh.D.Guthrie, D.Optimal stationary (s,S) inventory policies for stochastically convergent demand sequences
1968Shen, Chung-YiPh.D.David CarterProbability densities and correlation functions in statistical mechanics
1968Shiflett, Ray CalvinPh.D.Brown. J. R.Loops and points of density in doubly stochastic measures
1967Comstock, Dale RobertPh.D.Goheen, H. E.An operator scheme for computation with Turing machines
1967Cresswell, Donald JayPh.D. The relations among the modes of convergence of sequences of measurable functions
1967Jerri, Abdul J.Ph.D.Stone, W. M.On extension of the generalized sampling theorem
1967Sra, Kewal SinghPh.D.Mysore NarasimhanGeneralized measures of deformation-rates in non-Newtonian hydrodynamics and their applications to some flow problems
1967Vongsuri, SommaiPh.D.Goheen, H. E.A method of separation of exponentials and its relationship to time domain synthesis of a finite lumped-parameter relaxation system
1966Badii, LarryPh.D.Oberhettinger, F.Applications of integral transforms in generating summable series involving higher transcendental functions
1966Kvarda, Robert EdwardPh.D.David CarterCanonical states in quantum statistical mechanics
1966Nestell, Merlynd K.Ph.D.Philip AnseloneThe convergence of the discrete ordinates method for integral equations of anisotropic radiative transfer
1966Phillips, John RichardPh.D.Philip AnseloneEigenfunction expansions for self-adjoint bilinear operators in Hilbert space
1966Prenter, Patricia MoiraPh.D.David CarterThe extended exponential of a measure space
1966Wassmuth, Robert HenryPh.D.Gaskell, R. E.Some complex numerical integrations of the Schwarz-Christoffel transformation and application to potential flow
1966Weingarten, Frederick WesleyPh.D.Goheen, H. E.On triangulations of fixed points in the plane
1965Balogh, Charles BelaPh.D.Oberhettinger, F.Asymptotic expansions and general behavior of the modified Bessel function of the third kind of imaginary order
1965Balogh, Maria Edith CsermelyiPh.D.Goheen, H. E.On scheduling algorithms
1965Brady, Allen HaroldPh.D.Goheen, H. E.Solutions of restricted cases of the halting problem applied to the determination of particular values of a non-computable function
1965Freedman, Allen RoyPh.D.Stalley, R. D.A general theory of density in additive number theory
1965Reudink, Douglas Otto JohnPh.D.Oberhettinger, F.An extension of the method of Haar for determining the asymptotic behavior of integrals of the inverse Laplace transform type
1965Unger, Izaak LeoPh.D.Goheen, H. E.Elements of a fast decimal arithmetic unit
1965Barr, George EarlPh.D. PhysicsOberhettinger, F.On the Diffraction of a Cylindrical Pulse by a Half Plane
1964Henderson, Mason EdwardPh.D.Goheen, H. E.Finite geometries without the axiom of parallels
1964Johnson, Ben ClarencePh.D.Buschman, R. G.Integral equations involving special functions
1964Krogh, Frederick ThomasPh.D.Milne, W. E.Stability and accuracy of predict-correct methods in differential equations
1964Soni, Kusum LataPh.D.Oberhettinger, F.On some relations which are equivalent to functional equations of the type of Riemann's zeta function and tables of divisor transforms
1964Wyse, Frank OliverPh.D.Bradford ArnoldNets in uniform spaces : monotoneity, limit theorems
1963Kohfeld, John JacobPh.D.Milne, W. E.Stability of numerical solution of systems of ordinary differential equations
1963Olive, GloriaPh.D.Lonseth, A. T.Generalized powers
1963Roetman, Ernest LevanePh.D.Fulks, W. B.Vibration of elastic bars
1963Soni, Raj PalPh.D.Oberhettinger, F.The diffraction of cylindrical waves by two parallel half planes
1963Tucker, Richard RayPh.D.Lonseth, A. T.Error analysis , convergence, divergence, and the acceleration of convergence
1963Wirshup, Arthur D.Ph.D.Lonseth, A. T.Application of the Puiseux polygon to the solution of nonlinear integral equations
1962Goebel, Jack BrucePh.D.Goheen, H. E.On the algebra of orthogonal Latin squares
1962Kvarda, Betty LouPh.D.Stalley, R. D.Inequalities for the number of integers in a sum of sets of Gaussian integers
1962Maloof, Giles WilsonPh.D.Lonseth, A. T.Differential changes in the zeros of polynomial operators
1962Wheelock, James DickinsonPh.D.Stone, W. M.An approximate solution to the problem of random flights in a Euclidean space of N dimensions
1961Rosenthal, Paul LesterPh.D.Oberhettinger, F.On a generalization of Mehler's inversion formula and some of its application
1960Amos, Donald E.Ph.D.Oberhettinger, F.Application of the Wiener-Hopf technique t half plane diffraction of cylindrical waves
1960McFarland, James EdwardPh.D.Lonseth, A. T.Iterative solution of nonlinear integral equations
1959Rio, Sheldon T.Ph.D.Bradford ArnoldOn the Hammer topological system
1958Brown, Robert WallacePh.D.Lonseth, A. T.Solution of a nonlinear equation arising in a discontinuous control problem
1958Hilzman, JohnPh.D.Lonseth, A. T.Application of the Frechet differential to the approximate solution of the Volterra integral equation
1957Anselone, Philip M.Ph.D.Lonseth, A. T.Convergence of the Wick-Chandrasekhar approximation technique in radiative transfer
1957Clark, David LinusPh.D.Kimme, E. G.The distribution of linear functionals on stochastic processes
1957Kratzke, Albert WilliamPh.D.Stone, W. M.First passage time distributions in electronic receivers
1957Nickel, James AlvinPh.D.McLeod, E. B.Plane wedge flows of a homogeneous incompressible isotropic Reiner-Rivlin fluid
1956Carpenter, James FloydPh.D.Stone, W. M.On the Doppler frequency spectrum presented to a moving radar system by reflection from a rough plane earth
1956Hoggatt, Verner E.Ph.D.Clark, C. L.The inverse Weierstrass p-function : numerical solution, related properties and applications
1956Rall, Louis B.Ph.D.Lonseth, A. T.The quadratic formula in Banach space
1955Brock, Robert LewisPh.D.Stone, W. M.A new mathematical theory of detection by electronic instruments
1955Thompson, Gene ThomasPh.D.Lonseth, A. T.On Bateman's method for solving linear integral equations
1954Fredrickson, Elvy LennaPh.D.Lonseth, A. T.Application of the Schmidt theory to nonlinear integral equations
1949Price, James FerrisPh.D.Lonseth, A. T.Systems of rational differential equations
1948Eves, Howard WhitleyPh.D.Hostetter, I. M.A class of projective space curves