d
t
d
(
∂
q
˙
∂
L
δ
q
)
=
0
⟨
x
f
∣
e
−
i
H
t
/ℏ
∣
x
i
⟩
=
∫
D
[
x
(
t
)]
e
i
S
[
x
]
/ℏ
(
i
γ
μ
∂
μ
−
m
)
ψ
=
0
G
μν
+
Λ
g
μν
=
c
4
8
π
G
T
μν
时间观察者
/
timeobserver137
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#symmetry monster
2 essays
Symmetry and the Monster (2): The Eve of the Duel — Galois and the Equations That Cannot Be Solved
2026-06-16
#symmetry monster
Symmetry and the Monster (1): The language of symmetry, starting from five solids
2026-06-11
#symmetry monster
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