96 resultados para mathematics on the horizon


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2000 Mathematics Subject Classification: Primary 26A33; Secondary 47G20, 31B05

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2000 Mathematics Subject Classification: 33D60, 26A33, 33C60

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2000 Mathematics Subject Classification: 44A15, 44A35, 46E30

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2000 Mathematics Subject Classification: 26A33, 33C20

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2000 Mathematics Subject Classification: Primary 46F12, Secondary 44A15, 44A35

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2000 Mathematics Subject Classification: 42B20, 42B25, 42B35

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Mathematics Subject Classification: 30B10, 30B30; 33C10, 33C20

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2000 Mathematics Subject Classification: 26A33, 33C60, 44A15, 35K55

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Mathematics Subject Classification: 33C60, 33C20, 44A15

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On the basis of topical investigations on the reflection in the mathematics education, in this article there are presented some contemporary ideas about refining the methodology of mastering knowledge and skills for solving mathematical problems. The thesis is developed that for the general logical and for some particular mathematical methods to become means of solving mathematical problems, first they need to be a purpose of the education.

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An approximate number is an ordered pair consisting of a (real) number and an error bound, briefly error, which is a (real) non-negative number. To compute with approximate numbers the arithmetic operations on errors should be well-known. To model computations with errors one should suitably define and study arithmetic operations and order relations over the set of non-negative numbers. In this work we discuss the algebraic properties of non-negative numbers starting from familiar properties of real numbers. We focus on certain operations of errors which seem not to have been sufficiently studied algebraically. In this work we restrict ourselves to arithmetic operations for errors related to addition and multiplication by scalars. We pay special attention to subtractability-like properties of errors and the induced “distance-like” operation. This operation is implicitly used under different names in several contemporary fields of applied mathematics (inner subtraction and inner addition in interval analysis, generalized Hukuhara difference in fuzzy set theory, etc.) Here we present some new results related to algebraic properties of this operation.

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We propose a new approach to the mathematical modelling of microbial growth. Our approach differs from familiar Monod type models by considering two phases in the physiological states of the microorganisms and makes use of basic relations from enzyme kinetics. Such an approach may be useful in the modelling and control of biotechnological processes, where microorganisms are used for various biodegradation purposes and are often put under extreme inhibitory conditions. Some computational experiments are performed in support of our modelling approach.

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MSC 2010: 26A33, 44A45, 44A40, 65J10

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MSC 2010: 42C40, 94A12