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Forum: Linear and Abstract Algebra

Linear Systems of Equations, Eigenvalues and Eigenvectors, Vector Spaces, Groups, Rings, Fields

  1. Sticky Thread Sticky Threads

  2. Sticky Thread Linear Algebra Proofs and Problems

    Started by dwsmith, March 7th, 2012 21:33
    • Replies: 1
    • Views: 10,315
    March 8th, 2012, 20:05 Go to last post
  1. Normal Thread Normal Threads

  2. Basis of R-vector space

    Started by mathmari, December 3rd, 2016 00:04
    2 Pages
    1 2
    $forall, cdot, forall, space, wondering
    • Replies: 14
    • Views: 267
    December 5th, 2016, 06:42 Go to last post
  3. Are these vector spaces?

    Started by mathmari, December 2nd, 2016 19:36
    2 Pages
    1 2
    $forall, addition, cdot, multiplication, space
    • Replies: 14
    • Views: 289
    December 4th, 2016, 11:31 Go to last post
  4. Simple Unitial Rings .... centre is a field ... ? ...

    Started by Peter, December 2nd, 2016 20:34
    • Replies: 2
    • Views: 93
    December 3rd, 2016, 19:10 Go to last post
  5. Characteristic Equations and Commutativity

    Started by MaryAnn, November 29th, 2016 18:25
    $m$, characteristic, lambda, m^-1|, |mn
    • Replies: 7
    • Views: 237
    December 3rd, 2016, 10:30 Go to last post
  6. Centre of an Algebra ... and Central Algebras ...

    Started by Peter, November 27th, 2016 23:54
    • Replies: 7
    • Views: 207
    December 2nd, 2016, 20:19 Go to last post
  7. Finding the Set of Eigenvalues

    Started by MaryAnn, November 28th, 2016 19:10
    $lambda0$, eigenvalues, question, solutions, sqrtlambda
    • Replies: 7
    • Views: 172
    November 29th, 2016, 14:05 Go to last post
  8. Finding eigenvalues

    Started by MaryAnn, November 25th, 2016 23:13
    &-1, eigenvalues, entries, hand, matrix
    • Replies: 8
    • Views: 234
    November 28th, 2016, 18:03 Go to last post
  9. gH=Hg?

    Started by Alexmahone, November 20th, 2016 19:53
    $g$, $gh=hg$, $h$, hin, suppose
    • Replies: 4
    • Views: 182
    November 28th, 2016, 13:05 Go to last post
  10. First Weyl Algebras ... A_1 ...

    Started by Peter, November 27th, 2016 08:46
    • Replies: 2
    • Views: 102
    November 27th, 2016, 23:32 Go to last post
  11. Simple Matrix Rings ...

    Started by Peter, November 27th, 2016 09:40
    • Replies: 1
    • Views: 75
    November 27th, 2016, 11:26 Go to last post
  12. Subgroups of the dihedral group D6

    Started by mathmari, November 24th, 2016 12:56
    • Replies: 9
    • Views: 266
    November 26th, 2016, 16:52 Go to last post
  13. Proving determinant

    Started by MaryAnn, November 23rd, 2016 23:06
    $deta, 4k$, entries, hand, prove
    • Replies: 4
    • Views: 165
    November 26th, 2016, 11:08 Go to last post
  14. Subgroup of the Galois group

    Started by mathmari, November 24th, 2016 07:12
    $e$, $mathcalgl/e=langle, generator, polynomial, sigma^3
    • Replies: 1
    • Views: 79
    November 25th, 2016, 12:10 Go to last post
  15. Finding the inverse

    Started by MaryAnn, November 21st, 2016 23:05
    $$beginpmatrix, advantage, appreciated, endpmatrix$$, inverse
    • Replies: 7
    • Views: 188
    November 23rd, 2016, 22:51 Go to last post
  16. Permutation question concerning cycle shapes

    Started by Confusedalways, November 23rd, 2016 12:55
    fink4, hins4, h^-1fh, ink4, show
    • Replies: 1
    • Views: 89
    November 23rd, 2016, 14:06 Go to last post
  17. Frobenius Theorem - Bresar, Theorem 1.4 ...

    Started by Peter, November 23rd, 2016 06:14
    • Replies: 2
    • Views: 106
    November 23rd, 2016, 09:44 Go to last post
  18. n-Dimensional Real Division Algebras

    Started by Peter, November 22nd, 2016 22:21
    • Replies: 0
    • Views: 53
    November 22nd, 2016, 22:21 Go to last post
  19. Finding 3 natural numbers by the rule of Sarrus

    Started by MaryAnn, November 21st, 2016 22:47
    $x+y+z$, cdot, determinant, endvmatrix, sarrus
    • Replies: 2
    • Views: 107
    November 22nd, 2016, 11:59 Go to last post
    • Replies: 0
    • Views: 70
    November 21st, 2016, 01:26 Go to last post
  20. [SOLVED] Show that the set of the upper triangular matrices is a ring

    Started by mathmari, November 19th, 2016 17:58
    2 Pages
    1 2
    cdot, property, ring, set, show
    • Replies: 14
    • Views: 216
    November 20th, 2016, 09:24 Go to last post
  21. Bresar, Lemma 1.2 - Finite Division Algebras ...

    Started by Peter, November 19th, 2016 21:59
    • Replies: 0
    • Views: 55
    November 19th, 2016, 21:59 Go to last post
  22. Finite Dimensional Division Algebras - Bresar Lemma 1.1

    Started by Peter, November 16th, 2016 23:40
    • Replies: 2
    • Views: 113
    November 17th, 2016, 22:07 Go to last post
  23. [SOLVED] The matrix is idempotent

    Started by mathmari, November 9th, 2016 12:17
    =i_m-xx^tx^-1x^t, correct, idempotent, matrix, wondering
    • Replies: 2
    • Views: 109
    November 12th, 2016, 15:16 Go to last post

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