Hi. Ive just started a new maths course and i have come to realise that i have never been taught how to use symbols to write mathematical statements. For example, up until a day ago, i didnt know what [tex]\exists[/tex] or [tex]\forall[/tex] meant. Is anybody able to share some links that will explain the use of such symbols to construct statements? I am able to construct really basic statements such as: "For all x>4 there exists x>5" [tex]\forall x>4 , \exists x>5[/tex] But i dont even know if what i have written above is correct, or how to write more complex statements. Thanks in advance, Dan.