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Articles 24721 - 24750 of 27391
Full-Text Articles in Physical Sciences and Mathematics
Some Upper Bounds For Commutativity And Cyclicity Measures In Finite Groups, David Patrick, Catherine Sugar, Eric Wepsic
Some Upper Bounds For Commutativity And Cyclicity Measures In Finite Groups, David Patrick, Catherine Sugar, Eric Wepsic
Mathematical Sciences Technical Reports (MSTR)
The number of commuting and cyclic n-tuples in a group are enumerated for certain classes of groups.
Another Way Of Counting Nᴺ, Arthur T. Benjamin, Fritz Juhnke
Another Way Of Counting Nᴺ, Arthur T. Benjamin, Fritz Juhnke
All HMC Faculty Publications and Research
An original combinatorial proof of a combinatorial identity is presented.
On The Game Of Googol, Theodore P. Hill, Ulrich Krengel
On The Game Of Googol, Theodore P. Hill, Ulrich Krengel
Research Scholars in Residence
In the classical secretary problem the decision maker can only observe the relative ranks of the items presented. Recently, Ferguson — building on ideas of Stewart — showed that, in a game theoretic sense, there is no advantage if the actual values of the random variables underlying the relative ranks can be observed (game of googol). We extend this to the case where the number of items is unknown with a known upper bound. Corollary 3 extends one of the main results in [HK] to all randomized stopping times. We also include a modified, somewhat more formal argument for Ferguson's …
Planning For Basic Needs In India: A Supplement., Monoj Kumar Panda Dr.
Planning For Basic Needs In India: A Supplement., Monoj Kumar Panda Dr.
Doctoral Theses
Problems of economic development have received a great deal of attention in the last four decades. This has led to the evolution of several development goals like growth, redistribution, poverty alleviation and basic needs satiafac- tion. Initially, development atrategies e eared to were achieve maximum feasible growth rates. It was generally felt that the benefits of growth would spread widely to different sections of the population and in particular would percolate to the lower income groups. Judged by growth in national income, the development efforts have been successful, though to varying ext ent in different countries. But the percola- tion …
Construction Of Relative Difference Sets In P-Groups, James A. Davis
Construction Of Relative Difference Sets In P-Groups, James A. Davis
Department of Math & Statistics Faculty Publications
Jungnickel (1982) and Elliot and Butson (1966) have shown that (pj+1,p,pj+1,pj) relative difference sets exist in the elementary abelian p-group case (p an odd prime) and many 2-groups for the case p = 2. This paper provides two new constructions of relative difference sets with these parameters; the first handles any p-group (including non-abelian) with a special subgroup if j is odd, and any 2-group with that subgroup if j is even. The second construction shows that if j is odd, every abelian group …
On The Construction Of Prime Desert N-Tuplets, Derek M. Marusarz '92
On The Construction Of Prime Desert N-Tuplets, Derek M. Marusarz '92
Honors Projects
If we were able to show that there is an infinite number of prime desert n-tuplets of length k, for any appropriate odd k, then we would have solved the twin prime conjecture because then we would know that there would be an infinite number of prime desert 1-tuplets of length k =1, i.e., an infinite number of twin primes.
Counting Nilpotent Pairs In Finite Groups: Some Conjectures, H Dubose-Schmidt, Michael D. Galloy, D,L, Wilson
Counting Nilpotent Pairs In Finite Groups: Some Conjectures, H Dubose-Schmidt, Michael D. Galloy, D,L, Wilson
Mathematical Sciences Technical Reports (MSTR)
The number of nilpotent pairs is determined for a number of small groups.
Σary, Moorhead State University, Mathematics Department
Σary, Moorhead State University, Mathematics Department
Math Department Newsletters
No abstract provided.
Inverse Problem In Porous Medium Using Homogenization, Helen Alkes
Inverse Problem In Porous Medium Using Homogenization, Helen Alkes
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
The problem under consideration is that of obtaining a representation of the permeability of a porous medium which is heterogeneous and anisotropic from limited information. To solve this inverse problem we propose the use of two different pieces that work together. A simulated annealing algorithm is presented and coupled with an homogenization technique; together these solve the problem which was posed. Further, numerical simulation results are presented illustrating the use of the simulated annealing algorithm as well as a coupling with the homoginization technique. This study illustrates that the performance of the annealing algorithm is enhanced with usage of homogenization.
A Comparison Of Two Linear Nonparametric Regression Techniques, Sylvain Sardy
A Comparison Of Two Linear Nonparametric Regression Techniques, Sylvain Sardy
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
This thesis presented a useful tool in regression. Nonparametric linear regression techniques were described in the general context of regression. A comparison of two of these techniques, kernel regression and iterative regression, showed various aspects of nonparametric linear regressors.
Disconjugacy And Oscillation Theory Of Linear Differential And Difference Equations, Yuhua Xu
Disconjugacy And Oscillation Theory Of Linear Differential And Difference Equations, Yuhua Xu
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
This dissertation is both a literature survey and a presentation of new and independent results.
The survey gives an overview of disconjugacy and oscillation theory for linear differential and difference equations with an emphasis on comparing the theory of difference equations to the theory of differential equations. Second order scalar equations, higher order scalar equations, matrix equations (systems) and Hamiltonian systems are discussed. A chapter on three-term recurrences of systems is also included. Both similarities and differences between differential and difference equations are described.
The new and independent results are for Hamiltonian systems of difference equations. Those results include the …
Hopf Bifurcation In A Parabolic Free Boundary Problem, Yoon-Mee Lee
Hopf Bifurcation In A Parabolic Free Boundary Problem, Yoon-Mee Lee
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
We deal with a free boundary problem for a nonlinear parabolic equation, which includes a parameter in the free boundary condition. This type of system has been used in models of ecological systems, in chemical reactor theory and other kinds of propagation phenomena involving reactions and diffusion.
The main purpose of this dissertation is to show the global existence, uniqueness of solutions and that a Hopf bifurcation occurs at a critical value of the parameter r. The existence and uniqueness of the solution for this problem are shown by finding an equivalent regular free boundary problem to which existence …
Logical "Paradox": A Response To Fallacies, Flaws, And Flimflam #36, Calvin Jongsma
Logical "Paradox": A Response To Fallacies, Flaws, And Flimflam #36, Calvin Jongsma
Faculty Work Comprehensive List
Response to "Fallacies, Flaws, and Flimflam" by Ed Barbeau in The College Mathematics Journal, Vol. 23, No. 3 (May, 1992), pp. 203-206. Fallacies, Flaws, and Flimflam is a column in The College Mathematics Journal edited by Ed Barbeau of the Department of Mathematics at the University of Toronto.
A Maple Package For The Variational Calculus, Cinnamon Hillyard
A Maple Package For The Variational Calculus, Cinnamon Hillyard
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
The HELMHOLTZ package, written in Maple V, is a collection of commands to support research in the variational calculus. These commands include the standard operators on differential forms, Euler-Lagrange operators, homotopy operators, Lie bracket, Lie derivatives, and the prolongation of a vector field. We give a brief introduction to the variational calculus. We describe each of the commands in the HELMHOLTZ package completely along with numerous examples of each. Applications of the package include verification of symmetry groups for differential equations, solving the inverse problem of the calculus of variations, computing generalized symmetries, and finding variational integrating factors. A complete …
Optimal Control Of A Heat Flux In A Parabolic Partial Differential Equation, Katherine Renee Deaton
Optimal Control Of A Heat Flux In A Parabolic Partial Differential Equation, Katherine Renee Deaton
Masters Theses
We consider the problem of controlling the solution of a parabolic partial differential equation with non-homogeneous Neumann boundary conditions, taking the flux as the control. We take as our cost functional the sum of the L2 norms of the control and the difference between the temperature distribution attained and the desired temperature profile. We establish the existence of an optimal control that minimizes the cost functional. The optimal control is characterized in a constructive way through the solution to the optimality system, which is the original problem coupled with an adjoint problem. We establish existence and uniqueness of the …
Mielnik Probability Spaces And Functional Equations, J. J. Mitchell
Mielnik Probability Spaces And Functional Equations, J. J. Mitchell
Opportunities for Undergraduate Research Experience Program (OURE)
The invariance properties of the solutions of those functional equations naturally occurring in the construction of Mielnik probability spaces are studied, and in turn are related to one another. In particular, the possibilities for fixed points of these solutions are found, and the relationships between these results are discussed. The two functional equations studied include a representation of the generalized parallelogram law and an equation used in the modeling of polarization phenomena. The main result of the paper lies in the extention of previous research on Mielnik probability spaces to a higher dimension, as well as a discussion of their …
Shooting Method Solutions Of Eigenvalue Problems, Xi Chen
Shooting Method Solutions Of Eigenvalue Problems, Xi Chen
Opportunities for Undergraduate Research Experience Program (OURE)
A shooting method was developed to study eigenvalue problems derived from Schrodinger equation. The challenging problem, the two-dimensional hydrogen system with the logarithmic potential function, was successfully solved by the shooting method. But no complete proof was given for its rationale and correctness. This paper not only gives the complete proof for the shooting method, but also generalizes it to solve a large class of eigenvalue problems. In a certain sense, the shooting method proves more effective numerically and more powerful theoretically than the classical functional analysis approach.
Some Facts About Cycels And Tidy Groups, Kevin O'Bryant, D. Patrick, Lawren Smithline, Eric Wepsic
Some Facts About Cycels And Tidy Groups, Kevin O'Bryant, D. Patrick, Lawren Smithline, Eric Wepsic
Mathematical Sciences Technical Reports (MSTR)
No abstract provided.
From The Editor, Issue 7, 1992, Alvin White
From The Editor, Issue 7, 1992, Alvin White
Humanistic Mathematics Network Journal
No abstract provided.
Three Comments On Ethics, Saunders Maclane
Three Comments On Ethics, Saunders Maclane
Humanistic Mathematics Network Journal
No abstract provided.
Toward A Definition Of 'Humanistic Mathematics', Sherman K. Stein
Toward A Definition Of 'Humanistic Mathematics', Sherman K. Stein
Humanistic Mathematics Network Journal
No abstract provided.
Letter To Professor Joanne S. Growney, John S. Lew
Letter To Professor Joanne S. Growney, John S. Lew
Humanistic Mathematics Network Journal
No abstract provided.
Poems Taken From "An Evening Of Mathematical Poetry"
Poems Taken From "An Evening Of Mathematical Poetry"
Humanistic Mathematics Network Journal
No abstract provided.
Mathematics As A Humanistic Discipline, Elena Anne Corie Marchisotto
Mathematics As A Humanistic Discipline, Elena Anne Corie Marchisotto
Humanistic Mathematics Network Journal
No abstract provided.
Mathematical References In Literature, John S. Lew
Mathematical References In Literature, John S. Lew
Humanistic Mathematics Network Journal
No abstract provided.
Epistemological Pluralism: Styles And Voices Within The Computer Culture, Sherry Turkle, Seymour Papert
Epistemological Pluralism: Styles And Voices Within The Computer Culture, Sherry Turkle, Seymour Papert
Humanistic Mathematics Network Journal
No abstract provided.
What Is Mathematics And Why Don't They Know That?, Harald M. Ness
What Is Mathematics And Why Don't They Know That?, Harald M. Ness
Humanistic Mathematics Network Journal
No abstract provided.
Writing Humanistic Mathematics, Ruth Hubbard
Writing Humanistic Mathematics, Ruth Hubbard
Humanistic Mathematics Network Journal
No abstract provided.
Mathematics From An English Major's Point Of View, Elizabeth Miller, Kathleen M. Shannon
Mathematics From An English Major's Point Of View, Elizabeth Miller, Kathleen M. Shannon
Humanistic Mathematics Network Journal
No abstract provided.
The Profit Motive: The Bane Of Mathematics Education, Neal Koblitz
The Profit Motive: The Bane Of Mathematics Education, Neal Koblitz
Humanistic Mathematics Network Journal
No abstract provided.