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15,776 full-text articles. Page 439 of 440.

Enumeration Schemes For Permutations Avoiding Barred Patterns, Lara Pudwell 2009 Valparaiso University

Enumeration Schemes For Permutations Avoiding Barred Patterns, Lara Pudwell

Lara K. Pudwell

No abstract provided.


Exit Frequency Matrices For Finite Markov Chains, Andrew Beveridge, László Lovász 2009 Macalester College

Exit Frequency Matrices For Finite Markov Chains, Andrew Beveridge, László Lovász

Andrew Beveridge

No abstract provided.


Exponential Growth Rate Of Paths And Its Connection With Dynamics, Pengfei Zhang 2009 Northwestern University

Exponential Growth Rate Of Paths And Its Connection With Dynamics, Pengfei Zhang

Pengfei Zhang

No abstract provided.


Q-Partition Algebra Combinatorics, Thomas Halverson, N. Theim 2009 Macalester College

Q-Partition Algebra Combinatorics, Thomas Halverson, N. Theim

Thomas M. Halverson

No abstract provided.


Enumeration Schemes For Words Avoiding Permutations, Lara Pudwell 2009 Valparaiso University

Enumeration Schemes For Words Avoiding Permutations, Lara Pudwell

Lara K. Pudwell

No abstract provided.


When Does A Category Built On A Lattice With A Monoidal Structure Have A Monoidal Structure?, Lawrence Stout 2009 Illinois Wesleyan University

When Does A Category Built On A Lattice With A Monoidal Structure Have A Monoidal Structure?, Lawrence Stout

Lawrence N. Stout

In a word, sometimes. And it gets harder if the structure on L is not commutative. In this paper we consider the question of what properties are needed on the lattice L equipped with an operation * for several different kinds of categories built using Sets and L to have monoidal and monoidal closed structures. This works best for the Goguen category Set(L) in which membership, but not equality, is made fuzzy and maps respect membership. Commutativity becomes critical if we make the equality fuzzy as well. This can be done several ways, so a progression of categories is considered ...


Recursion, Infinity, And Modeling, Lawrence Stout, Hans-Jorg Tiede 2009 Illinois Wesleyan University

Recursion, Infinity, And Modeling, Lawrence Stout, Hans-Jorg Tiede

Lawrence N. Stout

Hauser, Chomsky, and Fitch (2002) claim that a core property of the human language faculty is recursion and that this property "yields discrete infinity" (2002: 1571) of natural languages. On the other hand, recursion is often motivated by the observation that there are infinitely many sentences that should be generated by a finite number of rules. It should be obvious that one cannot pursue both arguments simultaneously, on pain of circularity. The main aim of this paper is to clarify both conceptually and methodologically the relationship between recursion and infinity in language. We want to argue that discrete infinity is ...


Counting Interesting Elections, Lara Pudwell, Eric Rowland 2009 Valparaiso University

Counting Interesting Elections, Lara Pudwell, Eric Rowland

Lara K. Pudwell

No abstract provided.


List Coloring And N-Monophilic Graphs, Ramin Naimi, Radoslav Kirov 2009 Occidental College

List Coloring And N-Monophilic Graphs, Ramin Naimi, Radoslav Kirov

Ramin Naimi

In 1990, Kostochka and Sidorenko proposed studying the smallest number of list-colorings of a graph G among all assignments of lists of a given size n to its vertices. We say a graph G is n-monophilic if this number is minimized when identical n-color lists are assigned to all vertices of G. Kostochka and Sidorenko observed that all chordal graphs are n-monophilic for all n. Donner (1992) showed that every graph is n-monophilic for all sufficiently large n. We prove that all cycles are n-monophilic for all n; we give a complete characterization of 2-monophilic graphs (which turns out to ...


Mathematica In Action: Problem-Solving Through Visualization And Computation, Stan Wagon 2009 Macalester College

Mathematica In Action: Problem-Solving Through Visualization And Computation, Stan Wagon

Stan Wagon, Retired

No abstract provided.


Stacking Blocks And Counting Permutations, Lara Pudwell 2009 Valparaiso University

Stacking Blocks And Counting Permutations, Lara Pudwell

Lara K. Pudwell

No abstract provided.


Categorical Approaches To Non-Commutative Fuzzy Logic, Lawrence Stout 2009 Illinois Wesleyan University

Categorical Approaches To Non-Commutative Fuzzy Logic, Lawrence Stout

Lawrence N. Stout

In this paper we consider what it means for a logic to be non-commutative, how to generate examples of structures with a non-commutative operation * which have enough nice properties to serve as the truth values for a logic. Inference in the propositional logic is gotten from the categorical properties (products, coproducts, monoidal and closed structures, adjoint functors) of the categories of truth values. We then show how to extend this view of propositional logic to a predicate logic using categories of propositions about a type A with functors giving change of type and adjoints giving quantifiers. In the case where ...


Combinatorial Analysis, David Bressoud 2009 Macalester College

Combinatorial Analysis, David Bressoud

David Bressoud

No abstract provided.


College Algebra In Context With Applications To The Managerial, Life, And Social Sciences, Ronald Harshbarger, Lisa Yocco 2009 University of South Carolina - Beaufort

College Algebra In Context With Applications To The Managerial, Life, And Social Sciences, Ronald Harshbarger, Lisa Yocco

Lisa S. Yocco

Harshbarger/Yocco’s College Algebra in Context with Applications for the Managerial, Life, and Social Sciences, Third Edition uses modeling and real-data problems to develop the skills that students will need for their future courses and careers. Applications anticipate the math that students will encounter in their professional lives, giving them the practice they need to become adept problem-solvers. Every chapter begins with the Algebra Toolbox, which reviews the skills and concepts necessary to master the material ahead. This new full-color edition offers a greater number of technology tips, and the content has been reorganized to accommodate a wide range ...


On K4 Of The Gaussian And Eisenstein Integers, Mathieu Dutour Sikiric, Herbert Gangl, Paul Gunnells, Jonathan Hanke, Achill Schürmann, Dan Yasaki 2009 University of Massachusetts - Amherst

On K4 Of The Gaussian And Eisenstein Integers, Mathieu Dutour Sikiric, Herbert Gangl, Paul Gunnells, Jonathan Hanke, Achill Schürmann, Dan Yasaki

Paul Gunnells

Abstract. In this paper we investigate the structure of the algebraic K-groups K4(Z[i]) and K4(Z[ρ]), where i := √ −1 and ρ := (1 + √ −3)/2. We exploit the close connection between homology groups of GLn(R) for n 6 5 and those of related classifying spaces, then compute the former using Voronoi’s reduction theory of positive definite quadratic and Hermitian forms to produce a very large finite cell complex on which GLn(R) acts. Our main results are (i) K4(Z[i]) is a finite abelian 3-group, and (ii) K4(Z[ρ]) is trivial.


Quantifying The Effect Of Performance-Enhancing Drug Use On Fastball Velocity In Major League Baseball, Vittorio Addona, J. Roth 2009 Macalester College

Quantifying The Effect Of Performance-Enhancing Drug Use On Fastball Velocity In Major League Baseball, Vittorio Addona, J. Roth

Vittorio Addona

No abstract provided.


A Categorical Semantics For Fuzzy Predicate Logic, Lawrence N. Stout 2009 Illinois Wesleyan University

A Categorical Semantics For Fuzzy Predicate Logic, Lawrence N. Stout

Lawrence N. Stout

The object of this study is to look at categorical approaches to many valued logic, both propositional and predicate, to see how different logical properties result from different parts of the situation. In particular, the relationship between the categorical fabric I introduced at Linz in 2004 and the Fuzzy Logics studied by Hajek (2003) [5], Esteva et al. (2003) [1], and Hajek (1998) [4], comes from restricting the kind of structures used for truth values. We see how the structure of the various kinds of algebras shows up in the categorical logic, giving a variant on natural deduction for these ...


Spectral Decomposition Of Kac-Murdock-Szego Matrices, William F. Trench 2009 Trinity University

Spectral Decomposition Of Kac-Murdock-Szego Matrices, William F. Trench

William F. Trench

No abstract provided.


Characterization And Properties Of Matrices With $K$-Involutory Symmetries Ii, William F. Trench 2009 Trinity University

Characterization And Properties Of Matrices With $K$-Involutory Symmetries Ii, William F. Trench

William F. Trench

No abstract provided.


Phase-Linking And The Perceived Motion During Off-Vertical Axis Rotation, Jan E. Holly, Scott J. Wood, Gin McCollum 2009 Portland State University

Phase-Linking And The Perceived Motion During Off-Vertical Axis Rotation, Jan E. Holly, Scott J. Wood, Gin Mccollum

Gin McCollum

Human off-vertical axis rotation (OVAR) in the dark typically produces perceived motion about a cone, the amplitude of which changes as a function of frequency. This perception is commonly attributed to the fact that both the OVAR and the conical motion have a gravity vector that rotates about the subject. Little-known, however, is that this rotating-gravity explanation for perceived conical motion is inconsistent with basic observations about self-motion perception: (a) that the perceived vertical moves toward alignment with the gravito-inertial acceleration (GIA) and (b) that perceived translation arises from perceived linear acceleration, as derived from the portion of the GIA ...


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