The Collision Ring Theory is the hypothesis concerning the moons origin. Scientists theorize that a massive, planet-sized object struck Earth 63 million years ago, when the space around the Earth was full of rocky debris, resulting in ejected material to form a ring around the still young Earth. The material around the Earth fused into one orbital satellite known as the moon due to the laws of gravity. Parts of the outside layer of the Earth broke off and later were pulled together to form the moon
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One cannot have a theory (theorem) without proof. Theories are explanations (models with uses such as predicting on outcome of an experiment or event) for scientific laws, which only describe the phenomenon. Proof is anything that backs up a hypothesis. When a significant amount of proof is shown, the hypothesis becomes a theory due to it being accepting by the scientific community.
To prove a ring is commutative, one must show that for any two elements of the ring their product does not depend on the order in which you multiply them. For example, if p and q are any two elements of your ring then p*q must equal q*p in order for the ring to be commutative. Note that not every ring is commutative, in some rings p*q does not equal q*p for arbitrary q and p (for example, the ring of 2x2 matrices).
Ring is to sting as bee is to tree (or see or any other rhyming word).
I have a very old gold colored ring with a clear stone that has fs 4 k inside? what does that mean? what could the stone be? It is not a diamond but the Gold is real and looks like my 14 k ring..
N!/N