Algebra

Moderators: Bogdan Posa, Laurian Filip, Beniamin Bogosel, Radu Titiu, Marius Dragoi

New Topic

160 topics

Topics

Replies

Views

Last post

O identitate simpla cu det si tr

Last post by Mateescu Constantin « Fri Sep 03, 2010 11:14 pm
Replies: 2
by Mateescu Constantin » Fri Sep 03, 2010 2:04 pm

2 Replies

1109 Views

Last post by Mateescu Constantin
Fri Sep 03, 2010 11:14 pm
Puterile unei matrice din M_3(R)

Last post by Mateescu Constantin « Tue Aug 31, 2010 4:15 pm
Replies: 1
by Filip Chindea » Wed Jan 30, 2008 9:52 am

1 Replies

1215 Views

Last post by Mateescu Constantin
Tue Aug 31, 2010 4:15 pm
Matrice de ordin 2

Last post by DrAGos Calinescu « Sun Aug 29, 2010 5:30 pm
Replies: 1
by Mateescu Constantin » Sun Aug 29, 2010 4:11 pm

1 Replies

376 Views

Last post by DrAGos Calinescu
Sun Aug 29, 2010 5:30 pm
Matrice complexe A, B si pentru care A comuta cu AB-BA

Last post by andy crisan « Sat Jun 05, 2010 12:08 pm
Replies: 5
by bae » Mon Feb 18, 2008 4:04 am

5 Replies

1632 Views

Last post by andy crisan
Sat Jun 05, 2010 12:08 pm
A, B doua matrice de ordinul n astfel incat A-B=AB-BA

Last post by opincariumihai « Wed Jun 02, 2010 2:08 pm
Replies: 1
by opincariumihai » Mon May 18, 2009 10:01 pm

1 Replies

819 Views

Last post by opincariumihai
Wed Jun 02, 2010 2:08 pm
O problema de Marius Cavachi

Last post by turcas « Sat Apr 17, 2010 3:24 am
Replies: 1
by andy crisan » Thu Apr 15, 2010 6:10 pm

1 Replies

1040 Views

Last post by turcas
Sat Apr 17, 2010 3:24 am
SEEMOUS 2010- problema 3

Last post by Cosmin Pohoata « Fri Mar 12, 2010 4:01 pm
Replies: 1
by Radu Titiu » Fri Mar 12, 2010 2:55 pm

1 Replies

916 Views

Last post by Cosmin Pohoata
Fri Mar 12, 2010 4:01 pm
SEEMOUS 2010- problema 4

Last post by Radu Titiu « Fri Mar 12, 2010 3:01 pm

by Radu Titiu » Fri Mar 12, 2010 3:01 pm

0 Replies

584 Views

Last post by Radu Titiu
Fri Mar 12, 2010 3:01 pm
determinant

Last post by Marius Mainea « Tue Mar 09, 2010 9:10 pm
Replies: 1
by Lena » Tue Mar 09, 2010 8:04 pm

1 Replies

561 Views

Last post by Marius Mainea
Tue Mar 09, 2010 9:10 pm
Determinant nenegativ

Last post by andy crisan « Sun Mar 07, 2010 9:57 am
Replies: 15
by Marius Mainea » Fri Feb 19, 2010 9:55 am

15 Replies

3063 Views

Last post by andy crisan
Sun Mar 07, 2010 9:57 am
matrice

Last post by Beniamin Bogosel « Thu Mar 04, 2010 11:19 pm
Replies: 2
by elena_romina » Thu Mar 04, 2010 9:03 pm

2 Replies

727 Views

Last post by Beniamin Bogosel
Thu Mar 04, 2010 11:19 pm
Matrice de ordin 4

Last post by Marius Mainea « Tue Mar 02, 2010 9:04 pm
Replies: 1
by Marius Mainea » Fri Feb 19, 2010 10:00 am

1 Replies

535 Views

Last post by Marius Mainea
Tue Mar 02, 2010 9:04 pm
polinoame de matrici

Last post by andy crisan « Fri Feb 26, 2010 10:50 pm
Replies: 2
by mihai++ » Fri Feb 26, 2010 11:25 am

2 Replies

719 Views

Last post by andy crisan
Fri Feb 26, 2010 10:50 pm
Identitate cu determinanti

Last post by SNT « Thu Feb 25, 2010 10:47 pm
Replies: 1
by SNT » Sun Nov 22, 2009 5:08 am

1 Replies

707 Views

Last post by SNT
Thu Feb 25, 2010 10:47 pm
Sistem matriceal

Last post by mumble « Tue Feb 02, 2010 4:06 pm
Replies: 4
by Marius Mainea » Sat Jun 21, 2008 9:16 pm

4 Replies

1628 Views

Last post by mumble
Tue Feb 02, 2010 4:06 pm
Matrice de ordinul 2 cu elemente intregi

Last post by Marius Mainea « Sun Jan 31, 2010 8:13 pm
Replies: 1
by Cezar Lupu » Sun Jan 31, 2010 11:00 am

1 Replies

537 Views

Last post by Marius Mainea
Sun Jan 31, 2010 8:13 pm
Determinant dificil

Last post by mihai++ « Thu Dec 31, 2009 10:19 am
Replies: 2
by andy crisan » Thu Dec 31, 2009 12:43 am

2 Replies

696 Views

Last post by mihai++
Thu Dec 31, 2009 10:19 am
O matrice interesanta (own)

Last post by Laurentiu Tucaa « Wed Dec 16, 2009 6:30 pm

by Laurentiu Tucaa » Wed Dec 16, 2009 6:30 pm

0 Replies

611 Views

Last post by Laurentiu Tucaa
Wed Dec 16, 2009 6:30 pm
Ecuatie binoma in S_2009

Last post by Marius Mainea « Sat Dec 05, 2009 12:12 am

by Marius Mainea » Sat Dec 05, 2009 12:12 am

0 Replies

553 Views

Last post by Marius Mainea
Sat Dec 05, 2009 12:12 am
Matrice reala cu totii minorii numere irationale

Last post by Beniamin Bogosel « Wed Nov 11, 2009 6:21 pm
Replies: 1
by Theodor Munteanu » Fri May 22, 2009 3:50 pm

1 Replies

721 Views

Last post by Beniamin Bogosel
Wed Nov 11, 2009 6:21 pm
Concursul GM "Nicolae Teodorescu" 2009, problema 1

Last post by Marius Mainea « Tue Aug 18, 2009 2:49 pm
Replies: 1
by Laurentiu Tucaa » Tue Aug 18, 2009 11:49 am

1 Replies

705 Views

Last post by Marius Mainea
Tue Aug 18, 2009 2:49 pm
Inegalitate cu determinant

Last post by Marius Mainea « Mon Aug 17, 2009 12:58 pm
Replies: 1
by opincariumihai » Sat Jul 11, 2009 9:37 pm

1 Replies

788 Views

Last post by Marius Mainea
Mon Aug 17, 2009 12:58 pm
Sistem matriceal incompatibil

Last post by Marius Mainea « Thu Aug 13, 2009 10:56 pm

by Marius Mainea » Thu Aug 13, 2009 10:56 pm

0 Replies

702 Views

Last post by Marius Mainea
Thu Aug 13, 2009 10:56 pm
Intarirea unei inegalitati de pe mateforum

Last post by Marius Mainea « Tue Aug 11, 2009 9:38 am
Replies: 3
by opincariumihai » Mon Aug 10, 2009 1:10 pm

3 Replies

901 Views

Last post by Marius Mainea
Tue Aug 11, 2009 9:38 am
Identitate cu determinanti pentru doua matrice cu produsul 0

Last post by opincariumihai « Sun Aug 09, 2009 2:48 pm
Replies: 6
by opincariumihai » Thu May 21, 2009 6:29 pm

6 Replies

1678 Views

Last post by opincariumihai
Sun Aug 09, 2009 2:48 pm
Exercitiu teoretic

Last post by opincariumihai « Sat Aug 08, 2009 2:10 pm
Replies: 2
by opincariumihai » Sat Aug 08, 2009 12:02 pm

2 Replies

772 Views

Last post by opincariumihai
Sat Aug 08, 2009 2:10 pm
Matrice singulara

Last post by opincariumihai « Fri Aug 07, 2009 7:16 pm
Replies: 2
by opincariumihai » Fri Aug 07, 2009 10:44 am

2 Replies

943 Views

Last post by opincariumihai
Fri Aug 07, 2009 7:16 pm
O problema cu matrice a lui Kaplansky

Last post by Beniamin Bogosel « Mon Aug 03, 2009 11:17 am
Replies: 2
by opincariumihai » Sun May 24, 2009 3:47 pm

2 Replies

1097 Views

Last post by Beniamin Bogosel
Mon Aug 03, 2009 11:17 am
Relatii matriceale echivalente

Last post by Marius Mainea « Sat Jul 11, 2009 2:35 pm
Replies: 1
by opincariumihai » Fri Jul 10, 2009 3:51 am

1 Replies

788 Views

Last post by Marius Mainea
Sat Jul 11, 2009 2:35 pm
Inegalitate cu determinant

Last post by Marius Mainea « Tue Jun 30, 2009 12:17 am
Replies: 1
by opincariumihai » Sat May 23, 2009 1:12 pm

1 Replies

787 Views

Last post by Marius Mainea
Tue Jun 30, 2009 12:17 am
Matrice reale

Last post by opincariumihai « Sun Jun 28, 2009 6:50 pm
Replies: 1
by mihai++ » Sun Jun 28, 2009 2:44 pm

1 Replies

657 Views

Last post by opincariumihai
Sun Jun 28, 2009 6:50 pm
In legatura cu o problema de la ONM 1996

Last post by mihai++ « Thu Jun 25, 2009 9:15 pm
Replies: 6
by opincariumihai » Tue May 19, 2009 1:31 am

6 Replies

1539 Views

Last post by mihai++
Thu Jun 25, 2009 9:15 pm
Echivalenta a doua relatii matriceale

Last post by opincariumihai « Thu Jun 25, 2009 1:08 pm
Replies: 3
by opincariumihai » Wed Jun 24, 2009 11:37 am

3 Replies

855 Views

Last post by opincariumihai
Thu Jun 25, 2009 1:08 pm
Ecuatie matriceala

Last post by opincariumihai « Thu Jun 25, 2009 12:10 pm
Replies: 1
by mihai++ » Thu Jun 25, 2009 10:21 am

1 Replies

527 Views

Last post by opincariumihai
Thu Jun 25, 2009 12:10 pm
Suma de matrice cu determinantul pozitiv

Last post by opincariumihai « Mon Jun 22, 2009 12:49 pm
Replies: 2
by Bogdan Posa » Fri Feb 15, 2008 1:18 pm

2 Replies

1334 Views

Last post by opincariumihai
Mon Jun 22, 2009 12:49 pm
Un determinant mai special

Last post by SNT « Mon Jun 08, 2009 12:16 am
Replies: 8
by SNT » Tue Apr 28, 2009 6:48 pm

8 Replies

1989 Views

Last post by SNT
Mon Jun 08, 2009 12:16 am
Inegalitate intre determinati de matrice de ordin 2

Last post by opincariumihai « Sun May 31, 2009 11:24 am
Replies: 1
by Cezar Lupu » Wed Nov 07, 2007 1:13 am

1 Replies

1147 Views

Last post by opincariumihai
Sun May 31, 2009 11:24 am
Matricele antisimetrice au rangul par

Last post by opincariumihai « Mon May 25, 2009 1:02 pm
Replies: 6
by Bogdan Posa » Mon Feb 11, 2008 12:58 pm

6 Replies

1990 Views

Last post by opincariumihai
Mon May 25, 2009 1:02 pm
Traian Lalescu 2009, prb 4

Last post by Beniamin Bogosel « Sun May 24, 2009 3:12 pm
Replies: 5
by Alin Galatan » Sat May 16, 2009 10:59 pm

5 Replies

1378 Views

Last post by Beniamin Bogosel
Sun May 24, 2009 3:12 pm
In legatura cu topicul "Un determinant mai special"

Last post by Marius Mainea « Sun May 24, 2009 12:20 am
Replies: 2
by opincariumihai » Sat May 23, 2009 3:02 pm

2 Replies

730 Views

Last post by Marius Mainea
Sun May 24, 2009 12:20 am
Determinantul unor matrice simetrice este pozitiv

Last post by opincariumihai « Sat May 23, 2009 5:00 pm
Replies: 1
by bae » Mon Feb 18, 2008 3:34 am

1 Replies

1251 Views

Last post by opincariumihai
Sat May 23, 2009 5:00 pm
Exemplu de matrice cu det fixat

Last post by Cristi « Sat May 23, 2009 1:02 pm

by Cristi » Sat May 23, 2009 1:02 pm

0 Replies

522 Views

Last post by Cristi
Sat May 23, 2009 1:02 pm
Inegalitati cu ranguri

Last post by Marius Mainea « Sat Apr 25, 2009 9:26 pm

by Marius Mainea » Sat Apr 25, 2009 9:26 pm

0 Replies

616 Views

Last post by Marius Mainea
Sat Apr 25, 2009 9:26 pm
Matrice inversabila ,,aproape nula''

Last post by Marius Mainea « Sat Apr 25, 2009 9:08 pm

by Marius Mainea » Sat Apr 25, 2009 9:08 pm

0 Replies

715 Views

Last post by Marius Mainea
Sat Apr 25, 2009 9:08 pm
Matrice cu adjuncta 2-potenta

Last post by Theodor Munteanu « Fri Apr 24, 2009 11:04 pm
Replies: 2
by Marius Mainea » Wed Apr 22, 2009 12:54 am

2 Replies

991 Views

Last post by Theodor Munteanu
Fri Apr 24, 2009 11:04 pm
Vranceanu-Procopiu 2008, Problema 2

Last post by Beniamin Bogosel « Fri Apr 24, 2009 6:48 am
Replies: 3
by Laurian Filip » Thu Apr 23, 2009 7:38 pm

3 Replies

970 Views

Last post by Beniamin Bogosel
Fri Apr 24, 2009 6:48 am
TMMATE 2009, Problema 1

Last post by Laurian Filip « Fri Apr 24, 2009 5:54 am
Replies: 4
by Laurian Filip » Thu Apr 23, 2009 7:26 pm

4 Replies

984 Views

Last post by Laurian Filip
Fri Apr 24, 2009 5:54 am
Petre Sergescu 2009, Problema 1

Last post by Theodor Munteanu « Thu Apr 23, 2009 11:21 pm
Replies: 1
by Laurian Filip » Thu Apr 23, 2009 10:00 pm

1 Replies

737 Views

Last post by Theodor Munteanu
Thu Apr 23, 2009 11:21 pm
TMMATE 2009, Problema 3

Last post by Theodor Munteanu « Thu Apr 23, 2009 9:26 pm
Replies: 1
by Laurian Filip » Thu Apr 23, 2009 7:32 pm

1 Replies

629 Views

Last post by Theodor Munteanu
Thu Apr 23, 2009 9:26 pm
Matrice cu elemente in Z (Putnam 1994)

Last post by Theodor Munteanu « Wed Apr 22, 2009 5:03 pm
Replies: 1
by Centea Andrei » Thu Apr 24, 2008 1:45 pm

1 Replies

1190 Views

Last post by Theodor Munteanu
Wed Apr 22, 2009 5:03 pm

New Topic

160 topics

Return to Board Index

Forum permissions

You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum