Binomial ring

In mathematics, a binomial ring is a commutative ring whose additive group is torsion-free and contains all binomial coefficients


 * $$\binom{x}{n} = \frac{x(x-1)\cdots(x-n+1)}{n!}$$

for x in the ring and n a positive integer. Binomial rings were introduced by.

showed that binomial rings are essentially the same as &lambda;-rings for which all Adams operations are the identity.