In mathematics, infinity is the conceptual expression of such a numberless number. It is often symbolized by the lemniscate (also known as the lemniscate of Bernoulli), which looks something like the numeral 8 written sideways (). This symbol for infinity was first used in the 1600s by the mathematician John Wallis.
An epic is a poem; most epics started as oral tales that were passed down from generation to generation (often in the form of songs), which is why they're poems. A legend and a myth are more similar, but a myth most often explains something about the universe. So while there might be a legend about a man who slayed all the dragons, a myth would be about the man who caused it to rain, or how humans were created. Those are the basics differences.
myth. 1. a traditional or legendary story, esp. one that involves gods and heroes and explains a cultural practice or natural phenomenon. 2. stories of this kind collectively. 3. an invented story, fictitious person, etc.: His account of the event is pure myth.uch stories considered as a group: the realm of myth. 2. A popular belief or story that has become associated with a person, institution, or occurrence, especially one considered to illustrate a cultural ideal: a star whose fame turned her into a myth; the pioneer myth of suburbia.