first take at probability theory

Co-authored-by: Takafumi Saikawa <tscompor@gmail.com>
Co-authored-by: Alessandro Bruni <alessandro.bruni@gmail.com>

Author: 3 people

_CoqProject

@@ -36,6 +36,7 @@ theories/derive.v
 theories/measure.v
 theories/numfun.v
 theories/lebesgue_integral.v
+theories/probability.v
 theories/summability.v
 theories/signed.v
 theories/altreals/xfinmap.v