User contributions for Chris2crawford

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A user with 351 edits. Account created on 12 January 2009.

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11:0111:01, 20 June 2024 diff hist +323 Talk:Aliasing →Complex sinusoids figure: new section Tag: New topic

03:1703:17, 14 June 2024 diff hist +341 Talk:Two's complement →relation to two's complement?: new section Tag: New topic

09:2709:27, 30 April 2024 diff hist −22 Superheterodyne receiver Correction: RF+LO is not related to +/- IF. It is way out of band. Tags: Visual edit Mobile edit Mobile web edit Advanced mobile edit
09:1909:19, 30 April 2024 diff hist −12 m Superheterodyne receiver grammar Tags: Visual edit Mobile edit Mobile web edit Advanced mobile edit
09:0009:00, 30 April 2024 diff hist +9 m Superheterodyne receiver grammar Tags: Visual edit Mobile edit Mobile web edit Advanced mobile edit
08:5208:52, 30 April 2024 diff hist +7 Superheterodyne receiver Clarified voltage Tags: Visual edit Mobile edit Mobile web edit Advanced mobile edit
08:1208:12, 30 April 2024 diff hist +9 Lock-in amplifier grammar Tags: Visual edit Mobile edit Mobile web edit Advanced mobile edit
07:5507:55, 30 April 2024 diff hist +2 m Charge-pump phase-locked loop Fixed grammar Tags: Visual edit Mobile edit Mobile web edit Advanced mobile edit
07:4907:49, 30 April 2024 diff hist −10 m Phase-locked loop Fixed grammar Tags: Visual edit Mobile edit Mobile web edit Advanced mobile edit
07:4107:41, 30 April 2024 diff hist +12 m Phase-locked loop Fixed grammar Tags: Visual edit Mobile edit Mobile web edit Advanced mobile edit

01:4101:41, 10 April 2024 diff hist +566 Del in cylindrical and spherical coordinates fixed the trivial diagonal entries in the two "Unit vector conversions" tables from coodinate to unit vector equalities

03:5103:51, 7 March 2024 diff hist +3 m Orthogonal coordinates →Table of two-dimensional orthogonal coordinates: spelling
03:4903:49, 7 March 2024 diff hist +163 Talk:Orthogonal coordinates →point dipol: new section Tag: New topic

22:0422:04, 6 March 2024 diff hist +6 6-sphere coordinates involution

13:1813:18, 28 February 2024 diff hist +563 Talk:Orthogonal coordinates →elipse, parabola coordinates: new section Tag: New topic
13:0813:08, 28 February 2024 diff hist +371 Talk:Orthogonal coordinates →explanation of notation not clear: new section Tag: New topic
13:0713:07, 28 February 2024 diff hist +529 Talk:Orthogonal coordinates →Superscripts: Reply Tag: Reply

04:1404:14, 27 February 2024 diff hist +299 Curvilinear coordinates →Differentiation: added Laplacian of vector field
01:0401:04, 27 February 2024 diff hist +345 Talk:Legendre polynomials →missing definition of [t^n]: new section current Tag: New topic

13:4913:49, 5 February 2024 diff hist +394 Ordinary least squares →Solution: added third parameter theta_0

13:5813:58, 4 January 2024 diff hist +42 Mahalanobis distance link to standard score

16:4616:46, 17 November 2023 diff hist 0 Savitzky–Golay filter →Weighting the data: error correction: m=sum(1), but sum(w) subsumes m

02:3902:39, 5 November 2023 diff hist +4 m Kalman filter →Asymptotic form: added link
01:2401:24, 5 November 2023 diff hist +298 Talk:Kalman filter →Hats over variables: Reply Tag: Reply
00:4000:40, 5 November 2023 diff hist +304 Talk:Kalman filter →Possible error in intuitive expression update step: Reply Tag: Reply
00:3200:32, 5 November 2023 diff hist −8 m Kalman filter →Update
00:1500:15, 5 November 2023 diff hist +157 Talk:Kalman filter →A more intuitive way to express the updated state estimate...

23:2323:23, 4 November 2023 diff hist +10 Talk:Kalman filter →A more intuitive way to express the updated state estimate...
23:2223:22, 4 November 2023 diff hist +697 Talk:Kalman filter →A more intuitive way to express the updated state estimate...: Reply Tag: Reply
22:4322:43, 4 November 2023 diff hist +183 Kalman filter →Details: edited linear interpolation analogy for self-consistency -- see Talk page
20:1920:19, 4 November 2023 diff hist −5 m Kalman filter →Technical description and context
20:1020:10, 4 November 2023 diff hist +4 m Kalman filter →Overview of the calculation

19:3719:37, 7 October 2023 diff hist +53 Three-valued logic Moved NOT to unary operators, naming the other three also. Added inequality (a<b, etc) to implication. Tags: Visual edit Mobile edit Mobile web edit Advanced mobile edit
19:1419:14, 7 October 2023 diff hist +39 Three-valued logic Corections: Not is NOT a binary operator. Xnor is the same as equivalence; and clarification: all that remains are trivial operators. Tags: Visual edit Mobile edit Mobile web edit Advanced mobile edit

12:1412:14, 5 October 2023 diff hist −1 m Action at a distance (computer programming) grammar Tags: Visual edit Mobile edit Mobile web edit Advanced mobile edit

15:5215:52, 11 September 2023 diff hist +250 Linear least squares →Fitting a parabola: explained the figure, which does not go with the math in the section.

13:2513:25, 14 August 2023 diff hist +33 m Apple Inc. and unions →#AppleToo

15:5215:52, 1 August 2023 diff hist +113 Talk:Linear predictive coding →Underlying technique: Reply Tag: Reply
14:3014:30, 1 August 2023 diff hist +208 Talk:Elias delta coding →advantage?: new section Tag: New topic
11:5711:57, 1 August 2023 diff hist +679 Talk:Stokes parameters →Pick one notation, please: Reply Tag: Reply
00:4900:49, 1 August 2023 diff hist +252 Talk:Unpolarized light →Quantization and photons: new section Tag: New topic
00:4700:47, 1 August 2023 diff hist +113 Talk:Unpolarized light →Bad split: Reply Tag: Reply
00:4700:47, 1 August 2023 diff hist +3 m Unpolarized light No edit summary

16:3416:34, 18 May 2023 diff hist −4 Simplicial homology Format Tags: Visual edit Mobile edit Mobile web edit Advanced mobile edit

12:5112:51, 24 April 2023 diff hist +1,529 Talk:Curvilinear coordinates →confusion of \vec h_i and \vec b_i: new section Tag: New topic

14:0814:08, 22 February 2023 diff hist +25 m Spherical harmonics →Condon–Shortley phase: fixed link

14:5114:51, 14 February 2023 diff hist +149 Involution (mathematics) →Linear algebra: added conjugate of a matrix and hermitian adjoint.

22:0422:04, 13 October 2022 diff hist +1 m Forrest Mims →MITS

08:0208:02, 2 October 2022 diff hist +3 The Motley Fool Grammar Tags: Visual edit Mobile edit Mobile web edit Advanced mobile edit

15:1515:15, 15 September 2022 diff hist +14 m Central limit theorem →Classical CLT: clarified 'close'

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