Final answer:
Assertions are statements that claim something to be true. They generalize about the truth of a statement or proposition.
Step-by-step explanation:
Assertions are statements that assert or claim something to be true. They are used in logic to support arguments and conclusions. In essence, they generalize about the truth of a statement or proposition.
For example, let's say we have the assertion: 'All mammals are warm-blooded.' This assertion generalizes about the characteristic of being warm-blooded, stating that it applies to all mammals. By making this assertion, we are claiming that it is true for every single mammal.
Assertions can be proven true or false using evidence, logical reasoning, and empirical observations.