News Academy of Engineering Sciences A.M. Prokhorov Annotation << Back Computer and number asymmetry in engineering sciences A.D. Izotov F.I. Mavrikidi Present paper discusses the problem of adequacy of classical physico-mathematical tools in the realm of engineering problems in their vast spectra.. The main problem is discrepancy between classical notion of space-time and fractal reality of engineering systems environment, that causes different problems in basic mathematical structures – smooth functions, differential equations, definability, categoricity of results, etc. As a sequence this leads to unlimited processes of approximation of different kind. Due to high financial, material, social and even political responsibility of engineering solutions such instability of scientific results is unacceptable. It is argued that the space-time of engineering problems is fractal, rigged with number asymmetry. Number asymmetry is combination of real and p-adic numbers. It has justification in pure mathematics and fractal empirical results and is suitable both for physico-technical and systems problems. Such shift in theoretical basis is supported by modern computer science via fractal, 2-adic space-time of computer. This enables transfer and extend mathematical tools from those parts of mathematics, which were applicably latent. Computer-based mathematics saves classical results but its models become much more adequate to complementarity structure of natural sciences, reflected by fractals. Key words: Mathematical modeling, Engineering science, Fractals, computer, p-adic numbers. Contacts: E-mail: izotov@igic.ras.ru Pp. 03-13.