Abstract Algebra | The characteristic of a ring.

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We define the characteristic of a ring and give some definitions.

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6:05 2Z6 is not a good example because it does have an identity, 4 is the identity because 4*4=16=4(mod 6)
and 2*4=4*2=8=2(mod 6)

A better example would be 2Z8.

avi
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I got 0:17 seconds into this video before I started screaming. Thankfully it looks like there's a separate video explaining zero divisors. Bless, we live to math another day.

graceisonline
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I feel that there might be a mistake in video title :)

Kishibe