 IDEALS Home
 →
 College of Liberal Arts and Sciences
 →
 Dept. of Mathematics
 →
 Browse Dept. of Mathematics by Title
Browse Dept. of Mathematics by Title
Now showing items 219238 of 1135

(1997)In (Da92) E.C. Dade announcing the first of what has to be a series of conjectures concerned with counting characters in the blocks of finite groups. Specifically, Dade's socalled Ordinary Conjecture asserts that if a ...
application/pdf
PDF (4MB) 
application/pdf
PDF (4MB) 
(1980)It is known that many decision problems are unsolvable in the class of all finitely presented groups. When the class of groups is restricted, problems previously unsolvable can become solvable. In this work we investigate ...
application/pdf
PDF (4MB) 
application/pdf
PDF (2MB) 
(2002)Given an (undecidable) elementary theory of a computabilitytheoretic structure, it is natural to ask how much of the theory is decidable. An AEsentence is a sentence in prenex normal form with all universal quantifiers ...
application/pdf
PDF (3MB) 
application/pdf
PDF (1MB) 
application/pdf
PDF (1MB) 
application/pdf
PDF (2MB) 
(1968)
application/pdf
PDF (2MB) 
application/pdf
PDF (1MB) 
application/pdf
PDF (986kB) 
(1992)A theory T admits elimination of imaginaries (EI) if every definable equivalence relation $\sim$ is the kernel of a definable map f. (I.e., $\vec{x}\sim\vec{y}\Longleftrightarrow f(\vec{x})=f(\vec{y}).)$ This term was ...
application/pdf
PDF (5MB) 
(20140530)The Hilbert scheme of $n$ points in a smooth del Pezzo surface $S$ parameterizes zerodimensional subschemes with length $n$ on $S$. We construct a flat family of deformations of Hilb$^n S$ which can be conceptually ...
application/pdf
PDF (406kB) 
(1999)Having explicitly calculated universal deformations, the next logical question is whether we can calculate deformations with local restrictions. In fact, the ordinary deformation problem is representable, and we explain ...
application/pdf
PDF (3MB) 
(20120918)We examine several problems in extremal graph theory, emphasizing problems involving games on graphs. In Chapter 2, we study a variant of Ramsey theory, seeking Ramsey hosts with small maximum degree. We focus on finding ...
application/pdf
PDF (895kB) 
(1987)Consider the second order nonlinear differential operator ${\cal L}y$ = Ly + $\eta y\sp3$, where $\eta$ = $\pm$1 and L, the linear part of ${\cal L}$, is of the form Ly = $y\sp{\prime\prime}$ + $p(x)y\sp\prime$ + q(x)y. ...
application/pdf
PDF (2MB) 
(1977)
application/pdf
PDF (3MB) 
(20120918)For finite group presentations, the word problem is solvable if and only if the Dehn function is computable. Additionally, the bounded word problem is always solvable. For finitely generated decidable group presentations, ...
application/pdf
PDF (741kB) 
(2008)Our final problem is one in graph representations. We develop a lemma on traces of hypergraphs, extending results of Balogh and Bollobas. We then use this lemma, along with probabilistic methods, to show that for every ...
application/pdf
PDF (1MB) 
application/pdf
PDF (795kB)
Now showing items 219238 of 1135