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Retracts and Q-independence

100%

Chwastyk A.

Discussiones Mathematicae - General Algebra and Applications

2007

tom 27

nr 2

235-243

A non-empty set X of a carrier A of an algebra A is called Q-independent if the equality of two term functions f and g of the algebra A on any finite system of elements a₁,a₂,...,aₙ of X implies f(p(a₁),p(a₂),...,p(aₙ)) = g(p(a₁),p(a₂),...,p(aₙ)) for any mapping p ∈ Q. An algebra B is a retract of A if B is the image of a retraction (i.e. of an idempotent endomorphism of B). We investigate Q-independent subsets of algebras which have a retraction in their set of term functions.

Fuzzy calculus with aplications

63%

Chwastyk A., Kosiński W.

Mathematica Applicanda

2013

tom 41

nr 1

The aim of the artile is presenting the current state of ordered fuzzy numbers development. New model of fuzzy number was invented in 2002 to overcome drawbacks of classical (convex) fuzzy numbers. Two problems of management accounting are considered. The first relates to the management of supply and determining the optimal size of a delivery from outside, which minimalize total costs, when unit costs of delivery and storage are fuzzy. The second problem is related to determination of Internal Rate of Return (IRR) for investments in which the value of cash flow are not specified accurately. Key words and phrases: ordered fuzzy numbers, partial order relations, defuzzification functionals, management of supply, net present value (NPV), internal rate of return (IRR).

Ograniczanie wyników

1 Discussiones Mathematicae - General Algebra and Applications

1 Mathematica Applicanda

2 Chwastyk A.

1 Kosiński W.

1 2013

1 2007

Wyniki wyszukiwania

Retracts and Q-independence

Fuzzy calculus with aplications