Федин Сергей
25-December-2017 Monday
When 1x2=0
24-December-2017 Sunday
Measure and norm
23-December-2017 Saturday
Who does your math?
16-May-2017 Tuesday
How old are you?
02-May-2017 Tuesday
Global ideas and elementary typos
31-January-2016 Sunday
statistics...
11-January-2016 Monday
The dumbest thing in the world
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