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17:3217:32, 2 October 2024 diff hist +282 Lotka–Volterra equations →Hamiltonian structure of the system: Poisson bracket added for the canonical variables current

13:3813:38, 26 June 2024 diff hist +24 Nyquist stability criterion →Background: the argument (s) is added to each transfer function current

16:2916:29, 20 March 2024 diff hist −32 Yang–Baxter equation →History: corrected link to the .pdf file of ref. 8 (Jucys 1966)

16:2316:23, 2 January 2024 diff hist +24 Laplace transform →See also: added "transfer function" since Laplace transform is the main tool for calculation of transfer function

14:4014:40, 16 March 2023 diff hist +5 Sylvester's formula →Conditions: lambda symbol changed to mathematical lambda (for better look)

15:4515:45, 15 June 2022 diff hist +780 Lotka–Volterra equations →Hamiltonian structure of the system: added transformations to canonical variables

15:0015:00, 13 June 2022 diff hist +6 Hamiltonian mechanics →Deriving Hamilton's equations: corrercet q^i to \dot{q}^i
13:3313:33, 13 June 2022 diff hist +861 Lotka–Volterra equations →Solutions to the equations: new section on Hamiltonian structure of the equations is added, citation also added

14:4014:40, 10 June 2022 diff hist +459 Lotka–Volterra equations →A simple example: added Hamilton's equations and a definition of the Poisson bracket Tag: Reverted

13:5713:57, 25 May 2022 diff hist +314 Jucys–Murphy element →References: Added two urls to external PDF files

16:3916:39, 9 November 2021 diff hist +688 Complete set of commuting observables →Proofs: corrected that both operators A and B should be self-adjoin, because if one of the operator is defective, the proof 'When <math>A</math> has ''degenerate'' eigenvalues:' would be incorrect

17:1617:16, 1 June 2021 diff hist +5 Hamiltonian mechanics →Overview: link changed from Legendre transform to Legendre transformation
13:1213:12, 1 June 2021 diff hist +6 Hamiltonian mechanics →Relativistic charged particle in an electromagnetic field: make inline formulas written as <math>..</math> instead of

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