Get the fak out.

“—immense. I'm a real, slam-bang, honest-to-goodness, three-fisted humdinger. I'm a bona fide supraman.” “Superman?” Clevinger cried. “Superman?” “Supraman,” Yossarian corrected.

Traditionally, starting from Euler, multiplicativity of arithmetic sequences is customarily expressed in the form of an Euler product factorization of the generating Dirichlet series. It turns out that in the situation of modular forms, suitable Dirichlet series constructed by Fourier coefficients of eigenfunctions of Hecke operators can be expressed through Dirichlet series formed by the corresponding eigenvalues.

If your wallpaper has green and red in it and you put a red carpet in the room then the red jumps out.