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We describe the Stiefel–Whitney classes (SWCs) of orthogonal representations 휋 of the finite special linear groups G = SL ⁡ (2 , F q) , in terms of character values of 휋. From this calculation, we can answer interesting questions about SWCs of 휋. For instance, we determine the subalgebra of H * ⁢ (G , Z / 2 ⁢ Z) generated by the SWCs of orthogonal 휋, and we also determine which 휋 have non-trivial mod 2 Euler class. [ABSTRACT FROM AUTHOR]

In the present paper, we propose a sequence of generalized genuine Baskakov–Durrmeyer-type link operators. In terms of ordinary approximation, we estimate local and global direct results and also study the weighted approximation result. In terms of simultaneous approximation, we establish an asymptotic formula of Voronovskaja kind. In the last section, we prove convergence in L p {L_{p}} -norm. [ABSTRACT FROM AUTHOR]