User contributions for Marc van Leeuwen

29 April 2016

• 09:1709:17, 29 April 2016 diff hist 0 m Electric vehicle battery →Range parity: spelling

22 April 2016

• 10:5910:59, 22 April 2016 diff hist +252 Weight (representation theory) →Integral weight: requested clarification (actually correction)
• 10:3910:39, 22 April 2016 diff hist −11 Weight (representation theory) →Weights: provided requested clarification

11 April 2016

• 09:3309:33, 11 April 2016 diff hist +72 Embodied energy →Fuel: expand EROEI acronym on first use; also reformulated a cryptic sentence
• 08:4008:40, 11 April 2016 diff hist +14 m Embodied energy →Overall embodied energy of a car: add missing part of unit used
• 08:3808:38, 11 April 2016 diff hist +9 Sustainable transport →Environmental calculator of the French environment and energy agency: expand needless abbreviation "radwaste"

13 March 2016

• 13:1713:17, 13 March 2016 diff hist 0 m IEC 62196 →Type 2 (VDE-AR-E 2623-2-2), Mennekes {{anchor|Type 2}}{{anchor|VDE-AR-E 2623-2-2}}: correct typo in title

8 March 2016

• 05:2605:26, 8 March 2016 diff hist +2 m Unitary representation →Formal definitions: spelling: having unitary equivalence means being unitarily equivalent

10 January 2016

• 16:5816:58, 10 January 2016 diff hist −250 Talk:Binomial transform →Main Formula: Retract confused answer
• 11:4211:42, 10 January 2016 diff hist +1 m Talk:Binomial transform →Main Formula: reply
• 11:4111:41, 10 January 2016 diff hist +295 Talk:Binomial transform →Main Formula

6 January 2016

• 08:4708:47, 6 January 2016 diff hist 0 m Gaussian binomial coefficient →top: another typo in latest edit

5 January 2016

• 06:5306:53, 5 January 2016 diff hist +1 m Gaussian binomial coefficient →top: forgot an s
• 06:5106:51, 5 January 2016 diff hist +295 Gaussian binomial coefficient →top: Expand the lead with a main combinatorial interpretation

30 December 2015

• 08:5508:55, 30 December 2015 diff hist +4 Urelement →Theory: repair confusion, the urelement was U, not X

24 December 2015

• 08:5208:52, 24 December 2015 diff hist +160 Gauss's lemma (polynomials) →Version valid over any GCD ___domain: one more improvement
• 08:4108:41, 24 December 2015 diff hist +269 Gauss's lemma (polynomials) →Version valid over GCD ___domain: clarified explanation

19 December 2015

• 12:4012:40, 19 December 2015 diff hist 0 m Subharmonic →top: correct subharmonic series: 1/4 was skipped for no reason

2 December 2015

• 15:4515:45, 2 December 2015 diff hist 0 m Proton exchange membrane electrolysis →Voltage losses: combine a link and its label

28 November 2015

• 10:3510:35, 28 November 2015 diff hist +443 Hydrogen production →Steam reforming: Added quantification of CO2 production
• 09:5409:54, 28 November 2015 diff hist −17 Hydrogen production →Steam reforming: removed "making the gas"; it is confusing, does not appear to say anything, and the sentence is OK without it.

11 November 2015

• 12:1612:16, 11 November 2015 diff hist −19 Manifold vacuum →Manifold vacuum in cars: removed second link for "parasitic drag" in the same section, which moreover seemed less appropriately directed to "parasitic load"

10 November 2015

• 08:1508:15, 10 November 2015 diff hist +2 Hybrid Synergy Drive →High voltage battery: unit of charge is Ampère (times) hour, not Ampère per hour (also 200V×6.5Ah=13kWh so this is coherent)

29 October 2015

• 17:4017:40, 29 October 2015 diff hist −69 m Engine efficiency →Compression ratio: Remove repeated phrase
• 13:2413:24, 29 October 2015 diff hist 0 m List of modern production plug-in electric vehicles →Models available for retail customers (2007–2015): spelling

10 October 2015

• 12:2612:26, 10 October 2015 diff hist +11 Hybrid vehicle →Power-split or series-parallel hybrid: be more specific about which engine is turned off
• 12:2312:23, 10 October 2015 diff hist −9 Hybrid vehicle →Power-split or series-parallel hybrid: Repaired broken sentence; one doesn't bound an interval by intervals (like 0-100%)

20 April 2015

• 14:4614:46, 20 April 2015 diff hist +7 Rolle's theorem →Standard version of the theorem: added "proper"; the statement fails for a degenerate interval.

15 April 2015

• 07:3107:31, 15 April 2015 diff hist +21 Determinant →Block matrices: slight improvement: specify size of identity blocks
• 07:2607:26, 15 April 2015 diff hist +162 Determinant →Block matrices: provided simpler argument than (unclear) induction on n

13 April 2015

• 04:5804:58, 13 April 2015 diff hist +164 Characteristic polynomial →Properties: precision for the coefficient expression

12 March 2015

• 11:1011:10, 12 March 2015 diff hist +19 Schwarz theorem refine redirect

24 February 2015

• 10:4710:47, 24 February 2015 diff hist +41 Frobenius normal form →See also: mention Smith normal form
• 10:4610:46, 24 February 2015 diff hist +38 Smith normal form →See also: mention rational canonical form

18 February 2015

• 08:4208:42, 18 February 2015 diff hist +595 Talk:Iterated function →Should this page be renamed to "Function iteration"?: new section
• 08:3608:36, 18 February 2015 diff hist +1 Iterated function →top: oops
• 08:3508:35, 18 February 2015 diff hist +28 Iterated function →top: Rewrote nonsense in lead: no function is obtained by iterating *itself* and infinite iteration does not produce a function. Also removed the incomprehensible and unsourcable term "splinter".

25 January 2015

• 17:1817:18, 25 January 2015 diff hist 0 Macbeth Undid revision 644115871 by Macbath (talk) vandalism

20 January 2015

• 09:2309:23, 20 January 2015 diff hist +32 Value semantics →top: link for definiteness is wrong; better a redlink than a wrong link

2 January 2015

• 10:2810:28, 2 January 2015 diff hist −17 Elementary symmetric polynomial →An alternative proof: explained why product of leading terms gives leading term of product

14 December 2014

• 06:4806:48, 14 December 2014 diff hist +100 Permutation →Permutations of multisets
• 06:4006:40, 14 December 2014 diff hist +23 Permutation →k-permutations of n: don't use ordinary power notation for falling factorial power, use an underline to distinguish
• 06:3506:35, 14 December 2014 diff hist +201 Permutation →Circular permutations: Make relation with ordinary permutations explicit

9 December 2014

• 11:3211:32, 9 December 2014 diff hist +43 Chinese remainder theorem →Statement for principal ideal domains: Clarified phrase; the sequele is here necessary to justify the use of "isomorphism"

16 September 2014

• 14:5814:58, 16 September 2014 diff hist +971 Talk:Natural number →Implementation of whole number to redirect here

13 September 2014

• 14:1514:15, 13 September 2014 diff hist −1,245 Determinant Reverted to last version by Wcherowi, whose observations on the talk page still hold (and zapping "geometric intrepretation section). Please address those concerns instead of re-creating the section

4 September 2014

• 08:0808:08, 4 September 2014 diff hist +21 Kazhdan–Lusztig polynomial →Definition: remove error (of mine) borne of confusion between W and its Hecke algebra
• 07:5807:58, 4 September 2014 diff hist +50 N KLV polynomial create redirection
• 07:5707:57, 4 September 2014 diff hist +30 m Kazhdan–Lusztig–Vogan polynomial refine redirection

31 August 2014

• 08:5108:51, 31 August 2014 diff hist +49 Twelvefold way →{{anchor|case fnx}} Functions from N to X, up to permutations of N and X: better formulation