umbral algebra造句
例句与造句
- In the paper of Roman and Rota cited below, the umbral calculus is characterized as the study of the "'umbral algebra "', defined as the algebra of linear functionals on the vector space of polynomials in a variable " x ", with a product " L " 1 " L " 2 of linear functionals defined by
- It's difficult to find umbral algebra in a sentence. 用umbral algebra造句挺难的
