On the classification of finite simple groups by the number of involutions
On the classification of finite simple groups by the number of involutions
Simple groups with <italic>k</italic> involutions, where <inline-formula content-type="math/mathml"> <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" alttext="k identical-to 1"> <mml:semantics> <mml:mrow> <mml:mi>k</mml:mi> <mml:mo>≡<!-- ≡ --></mml:mo> <mml:mn>1</mml:mn> </mml:mrow> <mml:annotation encoding="application/x-tex">k \equiv 1</mml:annotation> </mml:semantics> </mml:math> </inline-formula> (modulo 4), are completely determined.