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Martin Sleziak
11:06 AM
Mauro ALLEGRANZA
reached 50k
. Congratulations!
Mauro ALLEGRANZA
, Italy
50k
3
33
86
logic
predicate-logic
propositional-calculus
first-order-logic
elementary-set-theory
discrete-mathematics
natural-deduction
5 hours later…
Martin Sleziak
4:06 PM
I see that arjafi got
gold discussion badge
on meta. Other two users with this badge are Asaf Karagila and quid.
Willie Wong and Behaviour used to have this badge:
chat.stackexchange.com/transcript/17403/2015/5/29
But one of them lost it after a deletion of a post and the other one deleted his account.
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