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Quadratic Forms and Closed Geodesics

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Simple trace formula<br />

<strong>Quadratic</strong> <strong>Forms</strong><br />

<strong>and</strong> <strong>Closed</strong><br />

<strong>Geodesics</strong><br />

Y. Petridis<br />

<strong>Quadratic</strong> <strong>Forms</strong><br />

Hyperbolic<br />

surfaces<br />

<strong>Closed</strong><br />

<strong>Geodesics</strong><br />

n∑<br />

Tr(A) = a ii =<br />

n∑<br />

i=1 j=1<br />

What is <strong>and</strong> how do I compute the trace of an operator?<br />

λ j<br />

Spectral Theory

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