February 2015
Intermediate to advanced
392 pages
17h 52m
German
Content preview from Mathematik für Wirtschaftswissenschaftler, 2nd Edition
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.
1.4. Mengen und Elemente 9
1.3.4 (Indirekter Beweis für die Wahrheit einer Aussage B)
A sei eine wahre Aussage. Lässt sich dann aus der Annahme, die Aussage Β sei falsch
(also -ιΒ wahr ), nachweisen, dass wahr ist, so ist Β eine wahre Aussage.
Beweis: Sind A und der Schluss ->B => ->A wahr, so ist die linke Seite
C = Α
Λ
(-I-B
->A)
der Tautologie „indirekter Beweis" wahr. Da C
=4>
Β als Tauto-
logie insgesamt wahr ist, kann Β nicht falsch sein. •
Beispiel 1.10 Von einem Buch sei bekannt, dass es Druckfehler enthält (Aussage Λ).
Es ist nachzuweisen, dass das erste Kapitel fehlerhaft ist (Aussage B). Nimmt man das
erste Kapitel als fehlerfrei
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Read now
Unlock full access
More than 5,000 organizations count on O’Reilly
O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.