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A quarry of geometries

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I sistemi di Steiner per i gruppi di MathieuM 22,M 23 edM 24 compaiono come residui in alcune ben note geometric sporadiche. Anche la famosa geometria piatta di tipoC 3 per il gruppo alternoA 7 è legata ad uno di essi, ma in essi si annidano molte altre geometrie. In questo scritto ne passo in rassegna un certo numero.

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  1. Dipartimento di Matematica, Università di Siena, Via del Capitano, 15, 53100, Siena, Italia

    Antonio Pasini

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  1. Antonio Pasini
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Conferenza tenuta il 12 giugno 1995

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Pasini, A. A quarry of geometries. Seminario Mat. e. Fis. di Milano 65, 179–247 (1995). https://doi.org/10.1007/BF02925258

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