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- 19:42, 29 April 2009 (diff | hist) . . (+1) . . Ch 22 -- 30 (current)
- 19:40, 29 April 2009 (diff | hist) . . (+705) . . N Ch 22 -- 30 (New page: Show that no finite field is algebraically closed. ---- There are just so many ways this can be proven. Here's one: Consider a finite field <math>\scriptstyle F</math> with elements <mat...)
- 21:17, 21 April 2009 (diff | hist) . . (+1) . . Chapter 21, Exercise 8 (current)
- 21:05, 21 April 2009 (diff | hist) . . (+4,641) . . N Chapter 21, Exercise 8 (New page: Find the degree and a basis for <math>\scriptstyle\mathbb{Q}(\sqrt{3}+\sqrt{5})</math> over <math>\scriptstyle\mathbb{Q}(\sqrt{15})</math>. Find the degree and a basis for <math>\scriptsty...)
- 19:11, 21 April 2009 (diff | hist) . . (+206) . . N Week 14 (New page: Category:MA453Spring2009WaltherChapter 21, Exercise 8 Chapter 21, Exercise 14 Chapter 21, Exercise 16 Chapter 21, Exercise 24 Chapter 21, Exercise 33 [[Chapter...)
- 19:09, 21 April 2009 (diff | hist) . . (+59) . . MA 453 Spring 2009 Walther Homework
- 21:29, 8 April 2009 (diff | hist) . . (0) . . Question 4
- 21:28, 8 April 2009 (diff | hist) . . (0) . . Question 4
- 21:15, 8 April 2009 (diff | hist) . . (+138) . . Question 4
- 20:58, 8 April 2009 (diff | hist) . . (+6,650) . . Question 4
- 18:21, 8 April 2009 (diff | hist) . . (+117) . . Question 4
- 15:12, 8 April 2009 (diff | hist) . . (+467) . . Chapter 17 Question 4
- 23:04, 7 April 2009 (diff | hist) . . (+852) . . N Chapter 17 Question 6 (New page: Since <math>\scriptstyle Z_p</math> is a field, and <math>\scriptstyle f(x)</math> is irreducible over <math>\scriptstyle Z_p</math>, by Corollary 1 of Theorem 17.5, <math>\scriptstyle Z_p...) (current)
- 22:37, 7 April 2009 (diff | hist) . . (+1,234) . . N Chapter 17 Question 4 (New page: <math>\scriptstyle f(x)\ =\ x^n+a_{n-1}x^{n-1}+\ldots+a_0\ =\ \in\ Z[x],\ (x-r)\mid f(x),\ r=\frac{p}{q},\ p,q\in\mathbb{Z},\ q\neq0</math> <math>\scriptstyle\Rightarrow\ f(x)\ =\ (x-\fra...)
- 22:20, 7 April 2009 (diff | hist) . . (+218) . . N Week 12 (New page: Chapter 17 Question 4 Chapter 17 Question 6 Chapter 17 Question 7 Chapter 17 Question 10 Chapter 17 Question 21 Question 4 from [http://www.math.purdue.edu/~w...) (current)
- 22:18, 7 April 2009 (diff | hist) . . (+133) . . MA 453 Spring 2009 Walther Homework
- 01:55, 2 April 2009 (diff | hist) . . (+796) . . N Ch. 16 - Problem 34 (New page: From Wilson's Theorem, we know that <math>\scriptstyle100!\ mod\ 101\ =\ 100.</math> Then dividing by <math>\scriptstyle100</math>, <math>\scriptstyle99!\ mod\ 101\ =\ 98!\cdot99\ mod\ 1...) (current)
- 01:20, 2 April 2009 (diff | hist) . . (+978) . . N Ch. 16 - Problem 32 (New page: If <math>\scriptstyle n</math> is prime, then we know that <math>\scriptstyle Z_n</math> is a field, completely defined by <math>\scriptstyle\{0,1,\ldots,n-1\}</math>, such that every elem...) (current)
- 00:05, 2 April 2009 (diff | hist) . . (+1,814) . . N Ch. 16 - Problem 22 (New page: Consider the ideal subring of <math>\scriptstyle Z[x]</math> of all polynomials with even constant terms: <math>\scriptstyle I\ =\ \textstyle\{\scriptstyle a_nx^n+a_{n-1}x^{n-1}+\ldots+a_...) (current)
- 22:35, 1 April 2009 (diff | hist) . . (+2,054) . . Ch. 16 - Problem 16 (current)
- 20:44, 1 April 2009 (diff | hist) . . (+723) . . Ch. 16 - Problem 13 (current)
- 00:00, 12 March 2009 (diff | hist) . . (+5) . . Ch. 13 - Problem 28
- 23:21, 11 March 2009 (diff | hist) . . (+1,179) . . Ch. 13 - Problem 5 (current)
- 23:04, 11 March 2009 (diff | hist) . . (+4,094) . . Ch. 13 - Problem 28
- 20:19, 25 February 2009 (diff | hist) . . (+986) . . Chapter 8- Problem 34
- 19:56, 25 February 2009 (diff | hist) . . (+47) . . Question 3 from file
- 19:32, 25 February 2009 (diff | hist) . . (+1) . . Question 3 from file
- 18:52, 25 February 2009 (diff | hist) . . (+268) . . Question 3 from file
- 18:45, 25 February 2009 (diff | hist) . . (+6,983) . . Question 3 from file
- 09:43, 16 February 2009 (diff | hist) . . (+5,097) . . N Chapter 9: Problem 11 (New page: Category:MA453Spring2009WaltherLet <math>\scriptstyle H</math> be a normal subgroup of <math>\scriptstyle G</math>. If <math>\scriptstyle H</math> and <math>\scriptstyle G/H</math> are...)
- 22:13, 12 February 2009 (diff | hist) . . (+1,059) . . Question from file
- 21:57, 11 February 2009 (diff | hist) . . (+228) . . Chapter 6: Problem 7
- 21:51, 11 February 2009 (diff | hist) . . (+339) . . Question from file
- 21:46, 11 February 2009 (diff | hist) . . (0) . . Question from file
- 13:24, 11 February 2009 (diff | hist) . . (+1,566) . . Chapter 7: Problem 10
- 07:15, 11 February 2009 (diff | hist) . . (+564) . . Chapter 6: Problem 35
- 22:15, 8 February 2009 (diff | hist) . . (+4) . . Question from file
- 22:09, 8 February 2009 (diff | hist) . . (+56) . . Week 5
- 22:03, 8 February 2009 (diff | hist) . . (+6,701) . . N Question from file (New page: Category:MA453Spring2009WaltherLet <math>\scriptstyle p</math> be a prime. Describe <math>\scriptstyle U(p^n)</math> and find the order of this group. Using your guess from HW3 in Chap...)
- 07:55, 5 February 2009 (diff | hist) . . (+165) . . Chapter 4: Problem 19
- 17:04, 4 February 2009 (diff | hist) . . (+1,609) . . Chapter 3: Problem 4
- 00:28, 4 February 2009 (diff | hist) . . (+1,396) . . Chapter 3: Problem 11
- 00:05, 4 February 2009 (diff | hist) . . (+269) . . Question about Chapter 3, Problem 4
- 00:01, 4 February 2009 (diff | hist) . . (+3) . . Chapter 3: Problem 48
- 00:01, 4 February 2009 (diff | hist) . . (+195) . . Chapter 3: Problem 48
- 23:56, 3 February 2009 (diff | hist) . . (+38) . . Chapter 4: Problem 61
- 23:56, 3 February 2009 (diff | hist) . . (+1,202) . . N Chapter 4: Problem 61 (New page: Let <math>\scriptstyle p</math> be a prime. Show that in a cyclic group of order <math>\scriptstyle p^n-1</math>, every element is a <math>\scriptstyle p</math>th power (that is, every ele...)
- 23:28, 3 February 2009 (diff | hist) . . (+27) . . Week 4 (current)
- 07:13, 26 January 2009 (diff | hist) . . (+5) . . Chapter 1 6
- 07:11, 26 January 2009 (diff | hist) . . (+48) . . Chapter 1 6
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