¶ Coring
Index Entry
Coring:
“Euler found that when we put a hole through a system and core it as in a doughnut, the number of the vertexes plus the number of the areas always equal the number of the lines. The number two dropped out. Coring dropped out the balancing integer two from the right hand side of the equation. I, therefore, said to myself that the integer two, which was dropped out from the right hand side of the equation was thought of by Euler and the topologists who followed him as being an empty integer necessary for balancing the equation, did in fact represent another conceptual or distinguishable pattern consideration, which was the twoness representing the poles of the core which had been removed.”
