### Yang-Mills

\mathcal{L} \supset i\bar{\psi}_{a}{\cancel{D}^{a}}_{b}\psi^{b} - m\bar{\psi}_{a}\psi^{a} - \frac{1}{4}G_{\mu\nu}^{a}G^{\mu\nu}_{a}

Z = \int\mathcal{D}\psi\mathcal{D}\bar{\psi}\mathcal{D}A ~ e^{-\int d^{n}x ~ \mathcal{L}[\psi,\bar{\psi},A]}

### Einstein-Hilbert

S \supset \int d^{4}x\sqrt{-g}~M_{P}^2(R-2\Lambda)

### Stokes Theorem

\int_{V} d\omega = \int_{\partial V}\omega

### Bosonic String

S = \int d^{2}\xi \sqrt{-g} g^{ab}\partial_{a}X^{\mu}\partial_{b}X^{\nu}G_{\mu\nu}(X)

### Celebration

Yay!