User contributions for Xjwiki
A user with 73 edits. Account created on 14 July 2007.
6 June 2024
- 09:1909:19, 6 June 2024 diff hist +1 m Bar (unit) →Usage
- 09:1809:18, 6 June 2024 diff hist +237 m Bar (unit) →Usage: Regarding to massive documentation at least in oil industry persists the usage of "BarG" and "BarA".
16 May 2024
- 10:5910:59, 16 May 2024 diff hist +13 Schwartz space →Definition
- 10:5810:58, 16 May 2024 diff hist +177 Schwartz space →Definition
- 10:5410:54, 16 May 2024 diff hist +1 Schwartz space →Examples of functions in the Schwartz space
- 10:5310:53, 16 May 2024 diff hist +1 Schwartz space →Examples of functions in the Schwartz space
- 10:5310:53, 16 May 2024 diff hist +116 Schwartz space →Examples of functions in the Schwartz space
3 September 2023
- 07:0207:02, 3 September 2023 diff hist −4 Tao →Confucian interpretations: To be understandable for native language speakers
22 August 2023
- 08:2408:24, 22 August 2023 diff hist 0 Distribution (mathematics) →Differential operators acting on smooth functions
17 April 2023
31 May 2022
- 10:2510:25, 31 May 2022 diff hist −15 m Effective mass (spring–mass system) →Ideal uniform spring
6 April 2022
- 10:2010:20, 6 April 2022 diff hist 0 m Effective mass (spring–mass system) →General case
- 09:3509:35, 6 April 2022 diff hist 0 m Effective mass (spring–mass system) →Ideal uniform spring
20 January 2022
- 10:2410:24, 20 January 2022 diff hist −1 m Surjective function No edit summary
14 January 2022
- 09:0009:00, 14 January 2022 diff hist 0 m Polarization identity →Complex vector spaces
- 07:3307:33, 14 January 2022 diff hist +18 Polarization identity →Complex vector spaces
13 January 2022
- 12:5312:53, 13 January 2022 diff hist +1 m Polarization identity →Complex vector spaces
- 12:5212:52, 13 January 2022 diff hist −48 m Polarization identity →Complex vector spaces
- 12:5112:51, 13 January 2022 diff hist +419 Polarization identity →Complex vector spaces
20 August 2021
- 06:3306:33, 20 August 2021 diff hist 0 Liangzhu culture https://whc.unesco.org/en/list/1592/
- 06:2606:26, 20 August 2021 diff hist −4 Liangzhu culture No edit summary
2 February 2021
- 13:3113:31, 2 February 2021 diff hist −4 Weibull distribution →Moments
16 October 2020
- 08:4208:42, 16 October 2020 diff hist +6 m Tautochrone curve →{{Anchor|Abel problem}}Abel's solution
- 08:4208:42, 16 October 2020 diff hist +114 Tautochrone curve →{{Anchor|Abel problem}}Abel's solution
- 08:3908:39, 16 October 2020 diff hist 0 Tautochrone curve →{{Anchor|Abel problem}}Abel's solution
24 August 2020
- 08:2008:20, 24 August 2020 diff hist −14 m Stationary phase approximation →An example: Can not see the reason to double the real frequencies. Appreciate to know the theoretic backgrounds if the change is wrong.
19 August 2020
- 07:3407:34, 19 August 2020 diff hist −4 Green's function →Green's functions for the Laplacian
- 07:3307:33, 19 August 2020 diff hist +2 Green's function No edit summary Tag: Manual revert
- 07:3207:32, 19 August 2020 diff hist −2 Green's function No edit summary
- 07:3107:31, 19 August 2020 diff hist +8 Green's function No edit summary
4 December 2017
- 09:1009:10, 4 December 2017 diff hist −166 Dispersion (water waves) Sorry! You are correct. It was my own misunderstanding!
1 December 2017
- 08:3908:39, 1 December 2017 diff hist +33 m Dispersion (water waves) The argument for phase speed c_p=sqrt(tanh(kh)/k) is wrong. CORRECT is c_p=sqrt(g*tanh(kh)/k)
20 November 2017
- 10:0110:01, 20 November 2017 diff hist +33 m Dispersion (water waves) For fixed wave length (k=k_1=k_2), if tanh(kh_1) >kh_2, then deeper (h_1) water have a larger phase speed than that shallower water with depth h_2.
20 August 2016
- 07:0407:04, 20 August 2016 diff hist +19 Abel's identity →Remarks
17 August 2016
- 12:5812:58, 17 August 2016 diff hist −122 Dispersion (water waves) Incorrect "For a given wavelength, gravity waves in deeper water have a larger phase speed than in shallower water"
8 August 2016
- 08:2908:29, 8 August 2016 diff hist +1 m Wake (physics) pressure difference include hydro-fluid
24 February 2016
- 08:0308:03, 24 February 2016 diff hist −29 m Buoyancy →Forces and equilibrium
2 September 2015
- 07:0807:08, 2 September 2015 diff hist −66 m Mechanical wave I feel this sentence too strong: "No material is transported as a result of mechanical waves. Mechanical waves transport energy only". How about swell wave, breaking waves or "whitecaps"? cf. also Rienecker & Fenton (R&F) streamfunction theory
10 July 2015
- 09:0509:05, 10 July 2015 diff hist −1 m Euler angles →Geometric derivation: again.
- 09:0409:04, 10 July 2015 diff hist −3 m Euler angles →Geometric derivation: The sign of the Z2 has no reason since Z2 itself can be negative. The positive sign holds if alpha is the angle between the rotation angle from ox-axis.
6 January 2015
- 10:2310:23, 6 January 2015 diff hist +14 Differentiation under the integral sign →Proof of Theorem
- 10:1910:19, 6 January 2015 diff hist −80 m Differentiation under the integral sign →Proof of Theorem: it is not necessarily to be monotonically increasing &=\int_a^b \left |f(x,\alpha+\Delta\alpha)-f(x,\alpha) \right |\;\mathrm{d}x \\
9 November 2012
17 March 2011
- 14:0614:06, 17 March 2011 diff hist −33 Pressure pressure does not have direction
4 February 2011
- 06:4506:45, 4 February 2011 diff hist +72 Pressure →Formula
3 November 2010
- 08:0108:01, 3 November 2010 diff hist +42 Atlantis PQ No edit summary
4 August 2009
10 June 2009
- 09:4109:41, 10 June 2009 diff hist +11 Meniscus (liquid) No edit summary
21 May 2009
- 10:3410:34, 21 May 2009 diff hist +30 m Potential energy This formal definition is clearer for the integral formulation.
- 09:4909:49, 21 May 2009 diff hist +211 Potential energy No edit summary
