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Diff — Action (physics)

Revision #984 → #1970 · back to history

modifiedAction (informal)12f3df295cc2
FieldFrom #984To #1970
mathlib.decl
mathlib.match_kind
mathlib.module
noteNo notion of physical 'action' (kinetic minus potential energy along a trajectory) is formalized in Mathlib.
statusnot_formalized
modifiedAction for single particle (uniform motion)970db218bd98
FieldFrom #984To #1970
mathlib.decl
mathlib.match_kind
mathlib.module
noteMathlib has no formalization of momentum or particle action.
statusnot_formalized
modifiedAction as functional0a84ece47d2f
FieldFrom #984To #1970
mathlib.decl
mathlib.match_kind
mathlib.module
noteNo action functional is defined in Mathlib.
statusnot_formalized
modifiedAction of a ball in gravity188b159d9513
FieldFrom #984To #1970
mathlib.decl
mathlib.match_kind
mathlib.module
noteThis concrete physics example has no Mathlib counterpart.
statusnot_formalized
addedLagrangian (generalization of KE − PE)50bd70b0b4f4
modifiedPlanck's quantum of action65544edf02ba
FieldFrom #984To #1970
mathlib.decl
mathlib.match_kind
mathlib.module
noteThe Planck constant is not formalized in Mathlib.
statusnot_formalized
addedReduced Planck constant ħ = h/2π85e9f1835739
modifiedAction integral with Lagrangiand3966020a0e9
FieldFrom #984To #1970
mathlib.decl
mathlib.match_kind
mathlib.module
noteNo action integral of a Lagrangian along a path is formalized.
statusnot_formalized
modifiedAction functional 𝒮[q(t)]76eed9f9b00e
FieldFrom #984To #1970
mathlib.decl
mathlib.match_kind
mathlib.module
noteNo definition of 𝒮[q(t)] as a Lagrangian time-integral exists in Mathlib.
statusnot_formalized
modifiedHamilton's principle704702d87511
FieldFrom #984To #1970
mathlib.decl
mathlib.match_kind
mathlib.module
noteHamilton's principle of stationary action is not in Mathlib (only Hamiltonian graphs/charpoly).
statusnot_formalized
modifiedAbbreviated actiona0b6bbe8e1e0
FieldFrom #984To #1970
mathlib.decl
mathlib.match_kind
mathlib.module
noteNo abbreviated action functional in Mathlib.
statusnot_formalized
modifiedMaupertuis's principle070eb1841e16
FieldFrom #984To #1970
mathlib.decl
mathlib.match_kind
mathlib.module
noteNo occurrences of Maupertuis in Mathlib.
statusnot_formalized
modifiedHamilton's characteristic function368a7fef30be
FieldFrom #984To #1970
anchor.sectionHamilton–Jacobi equationHamilton's characteristic function
mathlib.decl
mathlib.match_kind
mathlib.module
noteHamilton's characteristic function W is not formalized in Mathlib.
provenanceai-agent1ai-moderated
statusnot_formalized
modifiedAction of generalized coordinate J_k41ae09144165
FieldFrom #984To #1970
mathlib.decl
mathlib.match_kind
mathlib.module
noteAction-angle coordinates are not present in Mathlib.
statusnot_formalized
modifiedAction of relativistic point particle1803d23dc072
FieldFrom #984To #1970
mathlib.decl
mathlib.match_kind
mathlib.module
noteNo relativistic particle action, world line, or proper time in Mathlib.
statusnot_formalized
addedMetric tensor signature (mostly plus)c0b362a90d63
modifiedStationary action principle2e9a3636c818
FieldFrom #984To #1970
mathlib.decl
mathlib.match_kind
mathlib.module
noteStationary/least-action principle is not formalized in Mathlib.
statusnot_formalized
modifiedMaupertuis's principle (least length)dbe3ac96197c
FieldFrom #984To #1970
mathlib.decl
mathlib.match_kind
mathlib.module
noteMaupertuis's principle has no Mathlib counterpart.
statusnot_formalized
modifiedHamilton's principle (integral equation)eef6cc3c2c09
FieldFrom #984To #1970
mathlib.decl
mathlib.match_kind
mathlib.module
noteNo formulation of Hamilton's variational principle exists in Mathlib.
statusnot_formalized
modifiedHamilton's principal function55fa5fa68327
FieldFrom #984To #1970
mathlib.decl
mathlib.match_kind
mathlib.module
noteHamilton's principal function S(q,t;q0,t0) is not in Mathlib.
statusnot_formalized
addedHamilton–Jacobi equationc3c97ce4bc42
modifiedEuler–Lagrange equations767d6daa04e4
FieldFrom #984To #1970
mathlib.decl
mathlib.match_kind
mathlib.module
noteNo Euler–Lagrange equations are formalized in Mathlib (no calculus-of-variations infrastructure).
statusnot_formalized
addedMaxwell's equations from stationary action17c0a9484560
addedEinstein–Hilbert action1b6a52712963
addedFree-fall trajectory is a geodesic948c104b2521
modifiedNoether's theorem0ed9b230ca5b
FieldFrom #984To #1970
mathlib.decl
mathlib.match_kind
mathlib.module
noteNoether's theorem (symmetry → conservation law) is not in Mathlib; all 'Noether' hits concern Noetherian rings/modules/spaces.
statusnot_formalized
addedPath integral (sum over paths)8872385872fb