Update formatting of mathematical expressions in 22.md

Author: paatai

constants/22.md

@@ -3,9 +3,13 @@
 ## Description of constant
 
 Define
-\[H(\lambda, z):=\int_{0}^{\infty} e^{\lambda u^{2}} \Phi(u) \cos (z u) \, du\],
-where \[\Phi\] is the super-exponential function decaying function
-\[\Phi(u) = \sum_{n=1}^{\infty} (2\pi^2n^4e^{9u}-3\pi n^2 e^{5u} ) e^{-\pi n^2 e^{4u}}.\]
+
+$H(\lambda, z):=\int_{0}^{\infty} e^{\lambda u^{2}} \Phi(u) \cos (z u) \, du$,
+
+where $\Phi$ is the super-exponential function decaying function
+
+$\Phi(u) = \sum_{n=1}^{\infty} (2\pi^2n^4e^{9u}-3\pi n^2 e^{5u} ) e^{-\pi n^2 e^{4u}}.$
+
 Newman showed in [N1976] that there exists a finite constant $C_{22}$ (the de Bruijn–Newman constant) such that the zeros of $H$ are all real precisely when $\lambda \geq C_{22}$.
 
 ## Known upper bounds