Proof

(related to Corollary: Justification of Set Union)

axiomsunionsproof1

axiomsunionsproof2

axiomsunionsproof3

axiomsunionsproof4

axiomsunionsproof5

axiomsunionsproof6a


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References

Bibliography

  1. Ebbinghaus, H.-D.: "Einf├╝hrung in die Mengenlehre", BI Wisschenschaftsverlag, 1994, 3th Edition

Footnotes


  1. We mean the logical or operation, in the natural English language "and/or".