Algebra

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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

2131 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

1703 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

631 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

2651 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

1122 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

1463 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

1508 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

1431 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

1655 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

713588 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

1945 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

1868 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

2210 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

2621 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

3297 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

1474 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

1198 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

927 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

804 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

1192 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

1079 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

1519 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

2179 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

1354 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

2332 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

1099 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

1695 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

1516 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

1084 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

1038 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

877 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

1959 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

1228 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

721 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

2482 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

2585 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

1367 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

2317 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

4187 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

925 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

1577 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

671 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

796 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

884 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

1236 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

2153 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

1657 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

1145 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

814 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

1426 Views

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

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