Metamath Proof Explorer
Table of Contents - 2.1.18. Unordered and ordered pairs
- snjust
- csn
- df-sn
- cpr
- df-pr
- ctp
- df-tp
- cop
- df-op
- cotp
- df-ot
- sneq
- sneqi
- sneqd
- dfsn2
- elsng
- elsn
- velsn
- elsni
- absn
- dfpr2
- dfsn2ALT
- elprg
- elpri
- elpr
- elpr2g
- elpr2
- elpr2OLD
- nelpr2
- nelpr1
- nelpri
- prneli
- nelprd
- eldifpr
- rexdifpr
- snidg
- snidb
- snid
- vsnid
- elsn2g
- elsn2
- nelsn
- rabeqsn
- rabsssn
- ralsnsg
- rexsns
- rexsngf
- ralsngf
- reusngf
- ralsng
- rexsng
- reusng
- 2ralsng
- rexreusng
- exsnrex
- ralsn
- rexsn
- elpwunsn
- eqoreldif
- eltpg
- eldiftp
- eltpi
- eltp
- dftp2
- nfpr
- ifpr
- ralprgf
- rexprgf
- ralprg
- rexprg
- raltpg
- rextpg
- ralpr
- rexpr
- reuprg0
- reuprg
- reurexprg
- raltp
- rextp
- nfsn
- csbsng
- csbprg
- elinsn
- disjsn
- disjsn2
- disjpr2
- disjprsn
- disjtpsn
- disjtp2
- snprc
- snnzb
- rmosn
- r19.12sn
- rabsn
- rabsnifsb
- rabsnif
- rabrsn
- euabsn2
- euabsn
- reusn
- absneu
- rabsneu
- eusn
- rabsnt
- prcom
- preq1
- preq2
- preq12
- preq1i
- preq2i
- preq12i
- preq1d
- preq2d
- preq12d
- tpeq1
- tpeq2
- tpeq3
- tpeq1d
- tpeq2d
- tpeq3d
- tpeq123d
- tprot
- tpcoma
- tpcomb
- tpass
- qdass
- qdassr
- tpidm12
- tpidm13
- tpidm23
- tpidm
- tppreq3
- prid1g
- prid2g
- prid1
- prid2
- ifpprsnss
- prprc1
- prprc2
- prprc
- tpid1
- tpid1g
- tpid2
- tpid2g
- tpid3g
- tpid3
- snnzg
- snn0d
- snnz
- prnz
- prnzg
- tpnz
- tpnzd
- raltpd
- snssg
- snss
- eldifsn
- ssdifsn
- elpwdifsn
- eldifsni
- eldifsnneq
- neldifsn
- neldifsnd
- rexdifsn
- raldifsni
- raldifsnb
- eldifvsn
- difsn
- difprsnss
- difprsn1
- difprsn2
- diftpsn3
- difpr
- tpprceq3
- tppreqb
- difsnb
- difsnpss
- snssi
- snssd
- difsnid
- eldifeldifsn
- pw0
- pwpw0
- snsspr1
- snsspr2
- snsstp1
- snsstp2
- snsstp3
- prssg
- prss
- prssi
- prssd
- prsspwg
- ssprss
- ssprsseq
- sssn
- ssunsn2
- ssunsn
- eqsn
- issn
- n0snor2el
- ssunpr
- sspr
- sstp
- tpss
- tpssi
- sneqrg
- sneqr
- snsssn
- mosneq
- sneqbg
- snsspw
- prsspw
- preq1b
- preq2b
- preqr1
- preqr2
- preq12b
- opthpr
- preqr1g
- preq12bg
- prneimg
- prnebg
- pr1eqbg
- pr1nebg
- preqsnd
- prnesn
- prneprprc
- preqsn
- preq12nebg
- prel12g
- opthprneg
- elpreqprlem
- elpreqpr
- elpreqprb
- elpr2elpr
- dfopif
- dfopifOLD
- dfopg
- dfop
- opeq1
- opeq1OLD
- opeq2
- opeq2OLD
- opeq12
- opeq1i
- opeq2i
- opeq12i
- opeq1d
- opeq2d
- opeq12d
- oteq1
- oteq2
- oteq3
- oteq1d
- oteq2d
- oteq3d
- oteq123d
- nfop
- nfopd
- csbopg
- opidg
- opid
- ralunsn
- 2ralunsn
- opprc
- opprc1
- opprc2
- oprcl
- pwsn
- pwsnOLD
- pwpr
- pwtp
- pwpwpw0
- pwv
- prproe
- 3elpr2eq