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diff --git a/sourcecodes/bnt-master/KPMtools/is_stochastic.m b/sourcecodes/bnt-master/KPMtools/is_stochastic.m
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+function p = is_stochastic(T)
+% IS_STOCHASTIC Is the argument a stochastic matrix, i.e., the sum over the last dimension is 1.
+% p = is_stochastic(T)
+
+p = approxeq(T, mk_stochastic(T));