答案1
这似乎是帕拉蒂诺,数学来自mathpazo
。需要指出的是:您还可以将此字体与较新(且积极维护)的软件包一起使用newpx
,尽管数学字体略有不同(例如,希腊字母有点不同)。
\documentclass{article}
\usepackage{amsmath}
\usepackage{mathpazo}
\begin{document}
\setcounter{section}{3}
\setcounter{subsection}{2}
\subsection{The proof of the ``if''-part of Theorem 3.1}
Suppose that \(f\) satisfies multiplicative symmetries. Denote by \(\sigma(N)\) the sum of the positive divisors of \(N\). By Lemma 3.3, we have
\begin{align*}
& \epsilon_N q^{\sigma(N)} \prod_{\substack{ad=N \\ 0\leq b<d}} \Bigl( f^{(as)} (\zeta_d^b q^{a/d}) - f^{(as)}(r) \Bigr) \\
& = \prod_{\substack{ad=N \\ 0\leq b<d}} \biggl( 1 - \zeta_d^b q^{a/d} f^{(as)}(r) + \sum_{m=2}^\infty H_{m-1}^{(as)} \zeta_d^{bm} q^{am/d} \biggr)
\end{align*}
\end{document}