Is Atheism a belief system. After all the atheist believes there is no God .So if that's the case then an Atheist if a person of Faith. They have faith in the fact there is no God
Atheism is not "a belief" that there is no God. Atheism is knowing that there is no real proof that there is a god. If we apply your way of thinking, then you are a man of faith in the belief that Vishnu or Odin is not real or that Santa Claus is not real. It imay very well be a belief that Santa Claus is fictional to a child coming of age. But it becomes an understanding that the whole thing was made up to an adult who seeks better understanding. If I sought better understanding of the Bible and understand how it was all made up, that allows me to understand that the God of the Bible was also made up, but that doesn't make it a "belief" that can be denied by some and accepted by others as if that changes the truth of the matter.
Science allows for wrong understandings. Just produce some actual proof and the atheist will look at it. If your God exists and you can prove it, then things will have to be reevaluated. Until then, there is no proof of your god.
As far as faith goes, faith in someone or something is trust in it or a belief in someone's trustworthiness. But people of belief in God take that meaning and expand it way too much to include all positivity in believing in God. "Faith" makes absolute refusal to look at the lack of evidence a virtue. It is not a virtue. Faith is pretending to know what you cannot know.