Explicit codimension formulas of certain T-ideals (Q1122640)

Let E be the Grassmann algebra of a countable dimensional vector space over a field of characteristic zero and let \(\{f\}^ T\) be the T-ideal which is generated by the polynomial f. The author calculates the codimensions of the following T-ideals: T(E\(\otimes E)\), \(\{s_ 4(x_ i)\}^ T\), \(\{[[[x_ 1,x_ 2],[x_ 3,x_ 4]],x_ 5]\}^ T\), \(\{[[x,y]^ 2,z]\}^ T\).