Euler Class

The Euler class is the image of under the composition of these maps.

Read more about Euler Class:  Properties, Relations To Other Invariants

Famous quotes containing the word class:

    “Criminals are never very amusing. It’s because they’re failures. Those who make real money aren’t counted as criminals. This is a class distinction, not an ethical problem.”
    —Orson Welles (1915–1985)