# Advanced Algebra Forum

Advanced Algebra Help Forum: Linear and Abstract Algebra

1. ### Make sure your post belongs here

• Replies: 7
• Views: 5,553
Nov 25th 2012, 02:03 PM
1. ### Proving 3 inequalities cannot hold

• Replies: 0
• Views: 388
Nov 11th 2012, 03:53 PM
2. ### Imf=Kerf

• Replies: 1
• Views: 1,081
Nov 11th 2012, 03:20 AM
3. ### Proof of a very basic identity. a=b --> xa = xb

• Replies: 5
• Views: 1,194
Nov 10th 2012, 12:42 PM
4. ### help ! if R is regular ring, e and f are idempotents elements then Re+Rf=R(e+f)

• Replies: 5
• Views: 570
Nov 10th 2012, 11:39 AM
5. ### calculate order

• Replies: 3
• Views: 623
Nov 10th 2012, 07:37 AM
6. ### Simplifying matrix equation

• Replies: 2
• Views: 532
Nov 9th 2012, 09:33 PM
7. ### Hermitian Matrix

• Replies: 1
• Views: 489
Nov 9th 2012, 01:58 PM
8. ### Proof:Finite group with even order has at least one element x with x = x^{-1}

• Replies: 2
• Views: 1,563
Nov 9th 2012, 09:12 AM
9. ### polynomials direct and inverse image

• Replies: 1
• Views: 542
Nov 9th 2012, 08:42 AM
10. ### solution space

• Replies: 2
• Views: 596
Nov 9th 2012, 04:53 AM
11. ### group of invertible elements

• Replies: 5
• Views: 530
Nov 8th 2012, 08:41 AM
12. ### Group theory question with intersections, dividing, gcd...

• Replies: 1
• Views: 762
Nov 7th 2012, 05:01 PM
13. ### Index t of cyclic subgroup + isomorphism question

• Replies: 1
• Views: 702
Nov 7th 2012, 04:53 PM
14. ### Group ismorphism (Z2xZ4)

• Replies: 4
• Views: 1,069
Nov 7th 2012, 04:33 PM
15. ### Totally Unimodular Matrix?

• Replies: 0
• Views: 873
Nov 7th 2012, 02:25 AM
16. ### The order of roational symmetries of the soccer ball?

• Replies: 0
• Views: 835
Nov 7th 2012, 01:27 AM
17. ### Why the soccer ball can not be covered by only regular hexagons?

• Replies: 0
• Views: 667
Nov 7th 2012, 12:33 AM
18. ### f|g wy?

• Replies: 5
• Views: 777
Nov 6th 2012, 09:32 PM
19. ### Cauchy's Theorem question, abelian case

• Replies: 1
• Views: 700
Nov 6th 2012, 08:50 AM
20. ### direct image inverse image

• Replies: 6
• Views: 1,035
Nov 6th 2012, 06:58 AM
21. ### linear algebra proof help

• Replies: 5
• Views: 1,154
Nov 5th 2012, 05:42 PM
22. ### A(BC-CB)^2=(BC-CB)^2A, for any 2 by 2 complex matrix?

• Replies: 7
• Views: 800
Nov 5th 2012, 12:26 PM

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