User contributions for Marc van Leeuwen
A user with 2,666 edits. Account created on 13 January 2008.
9 January 2020
- 08:0408:04, 9 January 2020 diff hist 0 m Product of a sequence Match capitalisation with name of section, so that the redirect works as intended Tag: Redirect target changed
6 January 2020
- 10:2810:28, 6 January 2020 diff hist +778 User talk:Geke →Confusion about user (combination and permutations): new section
25 November 2019
- 15:5715:57, 25 November 2019 diff hist +455 Sylow theorems →Proof of the Sylow theorems: some small complements for theorem 1.
23 November 2019
- 20:3420:34, 23 November 2019 diff hist 0 m Sylow theorems →Proof of the Sylow theorems: spelling
- 20:3120:31, 23 November 2019 diff hist +366 Sylow theorems →Proof of the Sylow theorems: Reformulated proof of theorem 1 for more transparency
23 October 2019
- 15:2915:29, 23 October 2019 diff hist +26 Group action →{{visible anchor|Orbit-stabilizer theorem}} and Burnside's lemma: Improved presentation of orbit-stabilizer theorem, as requested
13 October 2019
- 08:1908:19, 13 October 2019 diff hist +981 Lithium-ion battery →Electrochemistry: The electrolyte is not a reactant; replaced confusing paragraph by a more complete description
11 July 2019
- 13:1213:12, 11 July 2019 diff hist +713 Talk:Pathological (mathematics) →Continuous functions are almost always nowhere differentiable, so why is the Weierstrass function atypical?: new section
17 June 2019
- 14:0414:04, 17 June 2019 diff hist +11 m Steven Crowder →Investigation by YouTube: correct missing words in quote
27 May 2019
- 10:1910:19, 27 May 2019 diff hist +99 Plactic monoid →top: reformulated apparent meaning of analogy to tectonic plates to something that would seem more plausible
23 April 2019
- 06:5506:55, 23 April 2019 diff hist +3 m Maurice Barrès →Political activism: corrected presumed mistranslation of French "sieger"; added missing punctuation
17 March 2019
- 14:3714:37, 17 March 2019 diff hist +129 History of geodesy →Ancient India: corrected diameter (relative to circumference) by inserting '+'; relativised the statement about value of the yojana unit; added missing unit of measure
- 14:0214:02, 17 March 2019 diff hist +32 History of geodesy →Hellenistic world: clarified phrase to what was apparently meant
9 March 2019
- 09:0809:08, 9 March 2019 diff hist −290 Disjoint sets →Intersections: Fused reference with one now introduced in an earlier section; removed some redundant and confusing "pairwise"
- 08:5508:55, 9 March 2019 diff hist 0 m Disjoint sets →Generalizations: Wrong variable name in previous edit
- 08:5408:54, 9 March 2019 diff hist +1,046 Disjoint sets →Generalizations
- 07:5607:56, 9 March 2019 diff hist +115 Disjoint sets →top: Corrected phrase to make clear "empty intersection" description only applies to intersection of two, as Halmos's reference makes clear
2 March 2019
- 10:0610:06, 2 March 2019 diff hist +1 Garnir relations →Specht modules in terms of polytabloids
- 10:0310:03, 2 March 2019 diff hist +288 Garnir relations →Specht modules in terms of polytabloids: rewrote; distinction between tableaux, orbits, tabloids, polytabloids was confused
27 February 2019
- 13:4213:42, 27 February 2019 diff hist 0 Skew-Hermitian matrix →Properties: corrected obviously wrong formula of the form $Z=-Z$
5 February 2019
- 15:2615:26, 5 February 2019 diff hist +96 Spectral theorem →Hermitian maps and Hermitian matrices: Rephrased; getting a diagonal matrix is not dependent on having the eigenvector basis be orthonormal
- 15:1715:17, 5 February 2019 diff hist −4 m Spectral theorem →Hermitian maps and Hermitian matrices: solutions to ->roots of (relating to the characteristic polynomial)
31 December 2018
- 12:4412:44, 31 December 2018 diff hist +1 m Snapchat →Core functionality: missing space
27 July 2018
- 15:1115:11, 27 July 2018 diff hist +1,325 Iterator →C++: Improve description of iterators
- 11:2311:23, 27 July 2018 diff hist +12 Iterator →C++: "Standard Library", not Standard Template Library
19 July 2018
- 05:0305:03, 19 July 2018 diff hist −72 Adaptive heap sort Remove reference to smoothsort: the description given in this article does not apply to it at all
- 04:5004:50, 19 July 2018 diff hist +18 Smoothsort →Analysis: make a link
- 04:3504:35, 19 July 2018 diff hist −23 m Smoothsort →Operations: Oops
- 04:3404:34, 19 July 2018 diff hist +403 Smoothsort →Operations: Reformulate this section
18 July 2018
- 08:0908:09, 18 July 2018 diff hist +4,013 Smoothsort →Overview: Rewrite overview to give a more conceptual view of the approach
22 November 2017
20 November 2017
17 October 2017
- 13:5713:57, 17 October 2017 diff hist −60 Tesla Supercharger →Supercharger technology: Remove meaningless (and unsourced) claim about "up to 16 times as fast as public (which?) charging stations"
17 August 2017
- 13:1113:11, 17 August 2017 diff hist +30 m Rectangular diagonal matrix Made redirection directly to relevant section current
22 April 2017
- 09:4809:48, 22 April 2017 diff hist 0 Newton's identities →Application to the roots of a polynomial: Adapt formulas to give the actual coefficients $(-1)^je_j$ that the sentence is about
16 April 2017
- 06:1506:15, 16 April 2017 diff hist +607 Talk:Cremona diagram →Please rewrite this article: new section
9 April 2017
6 April 2017
- 06:4006:40, 6 April 2017 diff hist −1 m Lie algebra homomorphism Adapt link to changed section name
- 06:3506:35, 6 April 2017 diff hist +38 Lie algebra representation →Formal definition: added missing linearity condition
19 November 2016
- 11:1811:18, 19 November 2016 diff hist 0 m Diesel engine →History: Change wrong date 1885->1895. The old date is clearly not the one of the following citation, and also contradicts "In later years" that starts the sentence
5 November 2016
- 10:5310:53, 5 November 2016 diff hist −85 Hybrid vehicle drivetrain Replace "deleted" by "depleted"; also merged two successive sentences that said essentially the same thing into one.
24 October 2016
- 15:1815:18, 24 October 2016 diff hist −6 m Nickel–cadmium battery →Charging: replace silly use of "exponentially"
14 August 2016
- 19:4419:44, 14 August 2016 diff hist −1 m Hans Memling →top: spelling (screw) steamer (or steam ship)
21 June 2016
- 12:2412:24, 21 June 2016 diff hist +20 m Ceva's theorem →top: disambiguate link
- 11:2011:20, 21 June 2016 diff hist +80 Ceva's theorem →top: corrected to a more accurate statement: the point O cannot be on a side of ABC (the formula wouldn't be defined), and the converse should admit the "concurrent at infinity" case
29 May 2016
- 11:3611:36, 29 May 2016 diff hist −625 Harvesting lightning energy →Electrical energy from Cloud, Lightning and Thunder: Remove section that says nothing relevant to the article, and was apparently added by the author of the article referenced in order to add visibility to that article. WP should not be so used
25 May 2016
- 09:1709:17, 25 May 2016 diff hist −4 m High-temperature electrolysis →The market for hydrogen production: No need to link to same article twice in one paragraph
15 May 2016
- 16:1016:10, 15 May 2016 diff hist −1 m DC-to-DC converter →History: move explanation of dynamotor to its first mention
11 May 2016
- 13:3813:38, 11 May 2016 diff hist −49 Riesz representation theorem →The Hilbert space representation theorem: Since Hilbert space vectors are kets, it should be "every bra corresponds to a unique ket", the other direction being obvious. Also reformulated: the theorem _does_ hold, and removed an unclear link
7 May 2016
- 15:3215:32, 7 May 2016 diff hist +1 m Bolloré Bluecar →top: swapped "the country" and "France", since no country was mentioned previous to "the country"
