User:Qxiphoid

$$ \int_\Sigma K dA = 2\pi \chi(\Sigma)$$, $$T^*M \otimes T_*M $$

$&int; _{ &Sigma;} K dA = 2 &pi; &chi;(&Sigma;)$

$( -&pi;, &pi; ]$

$T^{*}M &otimes; T_{*}M$

$|&alpha;|$