Why does the Palatini formalism of GR work?
13424
Why is it so coincident that Palatini variation of Einstein-Hilbert action will obtain an equation that connection is Levi-Civita connection?
103778
Geometric interpretation of connection forms, torsion forms, curvature forms, etc
51268
Why can't a Meredith Graph be Hamiltonian?
69945
A PDE exercise from Gilbarg Trudinger. problem 2.2
112216
Geometric description of canonical commutation relation
34312
Mathematically-oriented Treatment of General Relativity
137569
Generalising a Dirac Delta function formula in General Relativity
10953
Elementary argument for conservation laws from symmetries *without* using the Lagrangian formalism
3201
Landau & Lifshitz's Approach (contour method) on the WKB connection formulas
68422
Understanding Lagrange's Theorem (Group Theory)
41069
Justifying $\,\Bbb{Z}[i]/\langle 2\rangle\cong \Bbb{Z}[X]/\langle X^2+1,2\rangle\cong \Bbb{F}_2[X]/\langle X^2+1\rangle$
118070
Intuitively understanding Riemann surfaces
121914
Unitary representations of the diffeomorphism group in curved spacetime
157599
what is the meaning of $F_\sigma$ and $G_\delta?$
87922
Computing the Lie bracket on the Lie group $GL(n, \mathbb{R})$
90845
Is this posible in GR $g_{ab}g^{ab}=1$?
31102
Why does $\frac{1}{r}\frac{dr}{d\theta} = \cot \psi$?