International Congresses of Mathematicians
... that because of the controversy about excluding mathematicians from the Central Powers at the 1920 and 1924 International Congresses of Mathematicians, from 1932 and on the ICMs are not numbered?
... that because of the controversy about excluding mathematicians from the <a href="./Central_Powers" id="mw7g" rel="mw:WikiLink" title="Central Powers">Central Powers</a> at the 1920 and 1924 <b id="mw7w"><a href="./International_Congress_of_Mathematicians" id="mw8A" rel="mw:WikiLink" title="International Congress of Mathematicians">International Congresses of Mathematicians</a></b>, from 1932 and on the ICMs are not numbered?