At Moscow University the person who was to influence Chebyshev most was Nikolai Dmetrievich Brashman who had been professor of applied mathematics at the university since 1834. Brashman was particularly interested in mechanics but his interests were wide ranging and, in addition to courses on mechanical engineering and hydraulics, he taught his students the theory of integration of algebraic functions and the calculus of probability . Chebyshev always acknowledged the great influence Brashman had been on him while studying at university, and credited him as the main influence in directing his research interests, referring to their "precious personal talks".
Sa Moscow University ang mga tao na sa impluwensiya Chebyshev karamihan ay Nikolai Dmetrievich Brashman na nai-apply na propesor ng matematika at ang unibersidad mula noong 1834. Brashman ay lalo na interesado sa mechanics ngunit ang kanyang mga interes ay malawak na ranging at, bilang karagdagan sa mga kurso sa engineering ng makina at haydrolika, nagtuturo siya ng kanyang mga mag-aaral ng mga teorya ng pagkakabuo ng mga algebraic function at ang calculus ng mga bagay na maaaring mangyari. Chebyshev palaging kumilala ng magandang impluwensiya Brashman had been sa kanya habang ang pag-aaral sa unibersidad, at mga kredito sa kanya bilang ng mga pangunahing impluwensiya sa nagtutulak sa kanyang mga pananaliksik interes, referring sa kanilang "pinakamamahal personal na makikipag-usap".