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Fungrim entry: 534f7d

B1=#{{{1}}}=1B_{1} = \# \left\{\left\{\left\{1\right\}\right\}\right\} = 1
Definitions:
Fungrim symbol Notation Short description
BellNumberBnB_{n} Bell number
Cardinality#S\# S Set cardinality
Source code for this entry:
Entry(ID("534f7d"),
    Equal(BellNumber(1), Cardinality(Set(Set(Set(1)))), 1))

Topics using this entry

Copyright (C) Fredrik Johansson and contributors. Fungrim is provided under the MIT license. The source code is on GitHub.

2021-03-15 19:12:00.328586 UTC