User contributions for Marc van Leeuwen

9 December 2013

• 10:3910:39, 9 December 2013 diff hist −202 Matrix similarity clean up, rewrite
• 10:0810:08, 9 December 2013 diff hist −1,216 Eigenvalues and eigenvectors →Eigenbasis: clean up; most of what was said here already had been above, or is evident
• 10:0110:01, 9 December 2013 diff hist −875 Eigenvalues and eigenvectors →Eigenspace and spectrum: clean up, remove irrelevant stuff (such as that one can choose bases in eigenspaces)
• 09:4709:47, 9 December 2013 diff hist −14 Algebraic multiplicity Link to a currently existing subpage
• 09:4609:46, 9 December 2013 diff hist −15 m Geometric multiplicity Link to a currently existing subpage
• 09:4309:43, 9 December 2013 diff hist +2 m Eigenvalues and eigenvectors →Eigenspace and spectrum: bolden the term 'geometric multiplicity', which redirects here
• 09:2709:27, 9 December 2013 diff hist +456 Linear map →Examples: improved some parts
• 09:0009:00, 9 December 2013 diff hist +1 m Linear map Don't mix plural an singular
• 08:5808:58, 9 December 2013 diff hist +85 Linear map rewrote lead. An operator always maps a space to itself.

8 December 2013

• 11:4611:46, 8 December 2013 diff hist +334 Frobenius normal form rewrote lead
• 11:2811:28, 8 December 2013 diff hist +825 Talk:Frobenius normal form →Turner binormal projective anyone?: new section

7 December 2013

• 14:3014:30, 7 December 2013 diff hist −126 Elementary divisors remove wrong primary stuff, see talk page
• 14:2714:27, 7 December 2013 diff hist +808 Talk:Elementary divisors →Not primary ideals: new section

2 December 2013

• 10:2410:24, 2 December 2013 diff hist 0 m Matrix (mathematics) partially re-establish latest revision: at least mode the plural 's' into the wikitext so that appears as part of the link
• 09:1409:14, 2 December 2013 diff hist −35 Zero-based numbering revert replacement of text by unsourced personal opinion
• 07:4507:45, 2 December 2013 diff hist +1,209 Talk:Taylor series →Taylor series do not need to represent the (or indeed any) function: new section
• 07:3207:32, 2 December 2013 diff hist +794 Talk:Taylor series →Taylor series of f

27 November 2013

• 13:3813:38, 27 November 2013 diff hist +30 Local ring →Definition and first consequences: rephrased sentence for easier understanding

23 October 2013

• 13:4613:46, 23 October 2013 diff hist 0 Alain Lascoux corrected date deceased, in accordance with faire-part of his family

22 October 2013

• 07:5907:59, 22 October 2013 diff hist −1 m Permutation →Permutation of components of a sequence

26 September 2013

• 11:3311:33, 26 September 2013 diff hist +28 Binomial coefficient one more variant invented at http://books.google.fr/books?id=Rzkjuw4oRgYC&pg=PA186&dq=%22binomial+coefficient+C%22&hl=en&sa=X&ei=cxpEUtilFYLeswaLzYDYDg&ved=0CEAQ6AEwAw

22 September 2013

• 08:1008:10, 22 September 2013 diff hist 0 Material conditional →Philosophical problems with material conditional: p implies q could mean that q because p, but not that p because q
• 05:0005:00, 22 September 2013 diff hist +75 Binomial coefficient indicate that inversing indices in C_n^k in cited reference is due to translation; the Russian original does not have this

21 September 2013

• 14:2914:29, 21 September 2013 diff hist +23 Derrick Norman Lehmer citatation needed; this is most likely something that should be attributed to his son D.H. Lehmer
• 14:2714:27, 21 September 2013 diff hist +801 Talk:D. H. Lehmer →D.N. Lehmer and combinatorial computing?: new section
• 14:1814:18, 21 September 2013 diff hist −298 D. H. Lehmer →Combinatorics: Removed sentence that is certainly wrong. The factorial representation of integers was known long before.
• 14:1614:16, 21 September 2013 diff hist +19 D. H. Lehmer →Combinatorics
• 13:5913:59, 21 September 2013 diff hist +549 Talk:Semigroup →Semigroupoid=semicategory?: new section
• 13:5513:55, 21 September 2013 diff hist +1 Talk:Semigroup →Semigroup Applications
• 13:5413:54, 21 September 2013 diff hist +545 Talk:Semigroup →Semigroup Applications

17 September 2013

• 14:0814:08, 17 September 2013 diff hist +29 Variable (mathematics) A variable is a syntactic notion, a value a semantic one, so saying a variable is a value is nonsense. Done a quick fix.
• 07:4007:40, 17 September 2013 diff hist +77 Invertible matrix →Blockwise inversion: Reordered phrases to avoid confusing suggestion. Also added that the best known matrix multiplication algorithms are far from the best prove lower bound.

14 September 2013

• 18:1418:14, 14 September 2013 diff hist +488 Talk:Empty product →Programmatic justification
• 18:0118:01, 14 September 2013 diff hist +202 Talk:Empty product →Programmatic justification
• 14:5414:54, 14 September 2013 diff hist +47 Expression (mathematics) added a small explanation
• 14:5014:50, 14 September 2013 diff hist −355 Commuting matrices →Properties: Removed vague and wrong claims in second paragraph, retained the corrected claim.
• 14:4114:41, 14 September 2013 diff hist +236 Talk:Commuting matrices →Choose an eigenbasis
• 14:3414:34, 14 September 2013 diff hist +184 Commuting matrices →Properties: more precise description of when commutation with ''A'' implies being a polynomial in ''A''
• 14:3114:31, 14 September 2013 diff hist +369 Talk:Commuting matrices →Unitarily triangulizable?
• 14:2814:28, 14 September 2013 diff hist −16 Commuting matrices →Properties: remove untruth (see talk page)
• 14:2414:24, 14 September 2013 diff hist +314 Talk:Commuting matrices →Unitarily triangulizable?: new section

13 September 2013

• 07:3107:31, 13 September 2013 diff hist +5 RSK "correspondence between" is better than "algorithm between" Tag: Visual edit

11 September 2013

• 09:1809:18, 11 September 2013 diff hist +11 Common knowledge (logic) →Modal logic (syntactic characterization): an equation equates, visibly this what was meant to be equated
• 09:1409:14, 11 September 2013 diff hist −27 Common knowledge (logic) →Modal logic (syntactic characterization): fix index and bounds in infinite conjuction

6 September 2013

• 07:5107:51, 6 September 2013 diff hist −1 m Determinant →n × n matrices: minor cleanup of previous edit Tag: Visual edit
• 07:4707:47, 6 September 2013 diff hist −224 Determinant →n × n matrices: Reduced detailed discussion of signature, which can be found in the linked article. Also reorganised discussion of Levi-Civita formula.
• 07:1007:10, 6 September 2013 diff hist −22 m Gaussian integer Removed one parenthetic interjection, as it gets a bit tiresome in the lead. The reader will have no difficulty figuring this one out. Also removed a "therefore".
• 04:2804:28, 6 September 2013 diff hist −1 Talk:Lehmer code →Named for whom
• 04:2604:26, 6 September 2013 diff hist +452 Talk:Lehmer code →Named for whom

5 September 2013

• 16:3416:34, 5 September 2013 diff hist +1 m Spectrum of a matrix Fixing typo raised by BracketBot, balance parens