$$\infty $$-Operads via symmetric sequences
$$\infty $$-Operads via symmetric sequences
Abstract We construct a generalization of the Day convolution tensor product of presheaves that works for certain double $$\infty $$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mi>∞</mml:mi> </mml:math> -categories. Using this construction, we obtain an $$\infty $$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mi>∞</mml:mi> </mml:math> -categorical version of the well-known description of (one-object) operads as associative algebras in …