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Notation I use a lot:
- \( \mathbb{Z} \) represents the Integers (Zahlen I think)
- \( \mathbb{Q} \) represents the Rationals (fractions of integers)
- \( \in \) means "in" used for belonging to a set, e.g. \(q \in \mathbb{Q}\)
- \( \forall \) means "for all" or "for every" used like \(\forall x \in \mathbb{Z}\) to say "For all X in the integers" or just "for all integers"
- \( \exists \) means "There exists", normally used like \(\exists x \in \mathbb{Z}\) to say "There exists some X in the integers"
- IFF means "if and only if"
- s.t. means "such that"