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Signature symbols in this unit

Symbol Specification Kind Type
# .set-basicfset → nat
. + .nat-basicfnat × nat → nat
. ++ .set-basicfset × elem → set
. +1nat-basicfnat → nat
. - .natpfnat × nat → nat with λ n, m. n ≥ m
. -1nat-basicpfnat → nat with λ n. n ≠ 0
. < .nat-basicpnat × nat
. > .natpnat × nat
. ∈ .set-basicpelem × set
. ≤ .natpnat × nat
. ≥ .natpnat × nat
. ⊆ .set-basicpset × set
∅set-basiccset
elemelems
natnat-basics
sset-basicvset
setset-basics