User contributions for Red Act

31 July 2024

• 00:4700:47, 31 July 2024 diff hist +14 Electromagnetic tensor →Relativity: Use what I think is a better wikilink for semicolon notation. Also, my understanding is that the "semicolon" spelling is acceptable everywhere, but "semi-colon" is only used in British English.

21 June 2024

• 13:0913:09, 21 June 2024 diff hist −16 Antisymmetric tensor →Notation: Reword due to bad grammar ("to summation").

2 June 2024

• 03:2803:28, 2 June 2024 diff hist −1 Ultimate fate of the universe →Big Crunch: Don't hyphenate spacetime.
• 03:2603:26, 2 June 2024 diff hist −1 Quantum entanglement →Emergent gravity: Don't hyphenate spacetime.
• 00:0400:04, 2 June 2024 diff hist −7 Loop quantum gravity Don't hyphenate spacetime, except when quoting something. Also, Planckian should be capitalized.

1 June 2024

• 23:5623:56, 1 June 2024 diff hist −1 Big Crunch →Loop quantum cosmology (LQC): Don't hyphenate spacetime.
• 23:4223:42, 1 June 2024 diff hist −2 Alcubierre drive Don't hyphenate spacetime.
• 23:3523:35, 1 June 2024 diff hist −2 Cosmos: A Spacetime Odyssey →Episodes: Don't hyphenate spacetime.
• 23:2223:22, 1 June 2024 diff hist −1 Twin paradox →A non space-time approach: Fix punctuation of section title.
• 23:1323:13, 1 June 2024 diff hist −1 World line Change "space-time" to "spacetime", except for historical quotes.

13 May 2024

• 02:4802:48, 13 May 2024 diff hist +2 m Diagonal matrix Fix grammar problem

8 March 2024

• 08:2008:20, 8 March 2024 diff hist −15 m Rachel Cruze Reverted edits by 104.218.69.127 (talk) to last version by 142.116.134.167 Tag: Rollback
• 07:1607:16, 8 March 2024 diff hist −1 Bosonic string theory →Types of bosonic strings: "Recall that" doesn't make sense for information not presented earlier in the article.

23 February 2024

• 20:0120:01, 23 February 2024 diff hist −2 Closed timelike curve Spacetime isn't usually hyphenated in recent decades.

8 December 2023

• 03:4003:40, 8 December 2023 diff hist +81 North Pole (disambiguation) →Other uses: Add entry for IBM's NorthPole chip current

5 December 2023

• 20:3620:36, 5 December 2023 diff hist +17 Nvidia From WP's articles, it looks like Cerebras is bigger than GraphCore.

2 October 2023

• 16:2416:24, 2 October 2023 diff hist +210 Geometric algebra →Dual basis: Use the more natural multivector component index ordering that Doran and Lasenby use.
• 14:2714:27, 2 October 2023 diff hist −49 Geometric calculus →Multivector derivative: Go back to spelling out the basis blades, making the equation again identical to what's in Doran and Lasenby.

11 August 2023

• 14:0914:09, 11 August 2023 diff hist −5 Lie derivative Use what I think is more common terminology for a couple things, based on Google hits.

9 August 2023

• 03:1303:13, 9 August 2023 diff hist +8 m Affine connection →Motivation from tensor calculus: Fix missing "the" in two places.

3 August 2023

• 14:5614:56, 3 August 2023 diff hist +557 Talk:Geometric calculus →Derivative nomenclature: I just encountered "geometric derivative" in the wild.
• 09:1509:15, 3 August 2023 diff hist −16 Project Dojo Redirect to a better target. current Tags: Redirect target changed Manual revert

27 June 2023

• 03:5403:54, 27 June 2023 diff hist +42 Kaval Sviri →Popular versions: Fix inadequate link.

4 June 2023

• 04:0704:07, 4 June 2023 diff hist −2 Volume form →Divergence: I missed a left contraction instance in my last edit.
• 04:0304:03, 4 June 2023 diff hist −4 Volume form →Divergence: Use the symbol that's normally used for left contraction.

26 May 2023

• 02:4802:48, 26 May 2023 diff hist +23 Advection equation Redirect to the specific section that discusses the advection equation (a.k.a. the continuity equation). current Tag: Redirect target changed

17 May 2023

• 01:3301:33, 17 May 2023 diff hist −51 Compton wavelength Mainly make a few changes for clarity.

9 May 2023

• 03:4403:44, 9 May 2023 diff hist −6 Classical electron radius Make a couple minor tweaks.

10 March 2023

• 02:0902:09, 10 March 2023 diff hist +8 Lorentz group →Basic properties: Get rid of nonfunctional LaTex delimiters.

25 February 2023

• 04:5204:52, 25 February 2023 diff hist +4 m Representation theory of the Lorentz group →The unitarian trick: Add a missing "the".

24 February 2023

• 21:0021:00, 24 February 2023 diff hist +10 Fine-structure constant The relative uncertainty in a cited value is invalid, unless all digits in the cited value are given.

23 February 2023

• 19:5519:55, 23 February 2023 diff hist +41 Lorentz group →Generators of boosts and rotations: Add a link to an explanation of generators.

1 February 2023

• 00:3700:37, 1 February 2023 diff hist +1 m Hopf algebra →Formal definition: Use the appropriate indefinite article for before a vowel sound.

18 December 2022

• 03:1503:15, 18 December 2022 diff hist +232 Geometric calculus →Multivector derivative: Try to make an equation easier to understand by using the notation and language used in the article section that covers multivector reciprocal bases.
• 01:5801:58, 18 December 2022 diff hist +1,745 Geometric algebra →Dual basis: Mention other names for the dual basis, and extend the dual basis to multivectors.
• 00:1400:14, 18 December 2022 diff hist 0 Geometric algebra →Definition and notation: Move the "Dual basis" section to after the section defining the scalar product, because I'm intending to modify the "Dual basis" section such that it will use the scalar product.

10 December 2022

• 00:3400:34, 10 December 2022 diff hist +114 Directional derivative →The Riemann tensor: Use a consistent font for math.

9 December 2022

• 03:0103:01, 9 December 2022 diff hist +2 Geometric calculus →Multivector derivative: The definition of '''multivector derivative''' should be bold here, since that term redirects to this section.
• 02:5802:58, 9 December 2022 diff hist +55 N Multivector derivative Create a redirect for this concept to the article section that discusses it. Tag: New redirect

8 December 2022

• 23:1723:17, 8 December 2022 diff hist +1,550 Geometric calculus →Differentiation: Add a new section describing the multivector derivative.
• 20:4120:41, 8 December 2022 diff hist +7 Geometric calculus Change "geometric derivative" to "vector derivative" everywhere. See the talk page.
• 20:3220:32, 8 December 2022 diff hist +1,235 Talk:Geometric calculus New topic: Derivative nomenclature

6 December 2022

• 00:2300:23, 6 December 2022 diff hist +37 Larmor precession →Applications: Thomas precession will be zero if the particle is stationary, and under some other conditions.

2 December 2022

• 19:2619:26, 2 December 2022 diff hist +2 m Fermi transport Use the right kind of dash in the referenced article title. current Tag: Redirect target changed
• 19:2319:23, 2 December 2022 diff hist +35 N Fermi transport Some authors just say "Fermi transport". See, e.g., Geometric Algebra for Physicists, p. 151 Tag: New redirect

1 December 2022

• 17:0217:02, 1 December 2022 diff hist +25 Versor (disambiguation) Link to the specific pertinent section for the geometric algebra version of versor. current
• 15:5815:58, 1 December 2022 diff hist −2 Spin group A Kernel (linear algebra) link here doesn't work well for a group whose operation is denoted multiplicatively.
• 15:1815:18, 1 December 2022 diff hist +9 Isotropic quadratic form It's awkward to state a relationship between objects without specifying which objects have that relationship, even though it's rather obvious in this case.

28 November 2022

• 14:4814:48, 28 November 2022 diff hist −28 Rotor →Mathematics: A rotor isn't a blade, it's an even-graded multivector, and it can act on multivectors in general, not just blades.

11 October 2022

• 15:5915:59, 11 October 2022 diff hist +2 m Holographic principle Use the correct idiomatic expression for information content, and use a link to that article.