@article{oai:soar-ir.repo.nii.ac.jp:00018393, author = {Okazaki, Hiroyuki and Shidama, Yasunari}, issue = {1}, journal = {Formalized Mathematics}, month = {Jan}, note = {Article, Formalized Mathematics. 21(1): 33-39 (2013)}, pages = {33--39}, title = {Random Variables and Product of Probability Spaces}, volume = {21}, year = {2013} }