analogue filter
... that in designing a new analogue filter, Sidney Darlington found tables of the exact elliptic functions required in an 1829 Latin paper by Carl Jacobi in the New York City Library?
... that in designing a new <b id="mwEZs"><a href="./Analogue_filter" id="mwEZw" rel="mw:WikiLink" title="Analogue filter">analogue filter</a></b>, <a href="./Sidney_Darlington" id="mwEZ0" rel="mw:WikiLink" title="Sidney Darlington">Sidney Darlington</a> found tables of the exact <a href="./Elliptic_function" id="mwEZ4" rel="mw:WikiLink" title="Elliptic function">elliptic functions</a> required in an 1829 Latin paper by <a href="./Carl_Gustav_Jacob_Jacobi" id="mwEZ8" rel="mw:WikiLink" title="Carl Gustav Jacob Jacobi">Carl Jacobi</a> in the <a class="mw-redirect" href="./New_York_City_Library" id="mwEaA" rel="mw:WikiLink" title="New York City Library">New York City Library</a>?