more progress in first step of non-negative payments in wd_outcome
simplified proof that something is an allocation
lemma non_empty_imp_non_empty_partition
lemma runiq_imp_THE_right_comp'
lemma runiq_conv_imp_THE_left_comp'
lemma Domain_runiq_Diff_singleton
lemma runiq_except
lemma runiq_extend_singleton
lemma runiq_replace
lemma runiq_Diff_singleton_Domain
lemma runiq_replace'
lemma runiq_conv_extend_singleton
lemma runiq_conv_replace
lemma runiq_conv_Diff_singleton_Range
lemma runiq_conv_replace'
comment
documented "non free disposal" design choice
further progress in first step of non-negative payments in wd_outcome