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ekvivalens pil ?

Posted: 27/10-2016 12:39
by Guest
Stemmer dette at:

Hvis:

[tex]A\Leftrightarrow B[/tex]
[tex]A\Leftrightarrow C[/tex]
Dermed vil [tex]B\Leftrightarrow C[/tex] ?

Re: ekvivalens pil ?

Posted: 27/10-2016 12:53
by Aleks855
Ja, fordi $B \Rightarrow A \wedge A \Rightarrow C$