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Definition df-f1o 5223
Description: Define a one-to-one onto function. Compare Definition 6.15(6) of [TakeutiZaring] p. 27. We use their notation ("1-1" above the arrow and "onto" below the arrow). (Contributed by NM, 1-Aug-1994.)
Assertion
Ref Expression
df-f1o (𝐹:𝐴1-1-onto𝐵 ↔ (𝐹:𝐴1-1𝐵𝐹:𝐴onto𝐵))

Detailed syntax breakdown of Definition df-f1o
StepHypRef Expression
1 cA . . 3 class 𝐴
2 cB . . 3 class 𝐵
3 cF . . 3 class 𝐹
41, 2, 3wf1o 5215 . 2 wff 𝐹:𝐴1-1-onto𝐵
51, 2, 3wf1 5213 . . 3 wff 𝐹:𝐴1-1𝐵
61, 2, 3wfo 5214 . . 3 wff 𝐹:𝐴onto𝐵
75, 6wa 104 . 2 wff (𝐹:𝐴1-1𝐵𝐹:𝐴onto𝐵)
84, 7wb 105 1 wff (𝐹:𝐴1-1-onto𝐵 ↔ (𝐹:𝐴1-1𝐵𝐹:𝐴onto𝐵))
Colors of variables: wff set class
This definition is referenced by:  f1oeq1  5449  f1oeq2  5450  f1oeq3  5451  nff1o  5459  f1of1  5460  dff1o2  5466  dff1o5  5470  f1oco  5484  fo00  5497  dff1o6  5776  fcof1o  5789  tposf1o2  6270  cnref1o  9649  1arith  12364  xpsff1o  12767  reeff1o  14164  ioocosf1o  14245
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