Authorship of Genesis 1-11 is attributed to Moses.
Genesis 1-11 was most likely written shortly following Israel's exodus from Egypt (c. 1445 B.C.)
Genesis 1-11 are one unit with Genesis 12-50.
Genesis 1-11 were written as history with Genesis 12-50.
Along with history, Genesis 1-11 also fit into the "myth" genre as a story of origins ("myth" does not speak to veracity, don't misread or read too much into that category)
God is creator and revealer.
There was a beginning.
God transcends spacetime