This puzzle is known as the problem of time, and it remains one of the most persistent obstacles to a unified theory of ...
When news breaks, you need to understand what actually matters. At Vox, our mission is to help you make sense of the world — and that work has never been more vital. But we can’t do it on our own. We ...
Differential analysis requires you to think about all the potential solutions to a particular business opportunity to determine which one is the most cost-effective. By analyzing the cost and revenue ...
ABSTRACT: Fractional-order time-delay differential equations can describe many complex physical phenomena with memory or delay effects, which are widely used in the fields of cell biology, control ...
Abstract: This note studies the stability problem of nonlinear positive differential-difference equations with unbounded time-varying delays. Under assumptions on the nonlinear vector fields, such as ...
An illustration of a magnifying glass. An illustration of a magnifying glass.
Abstract: This note proposes a reaching law based on a difference equation with minima, for discrete-time sliding mode control, providing a solution that has properties of modified Gao’s reaching law ...
1 Department of Mathematics, Faculty of Science, Tanta University, Tanta, Egypt 2 Department of Mathematics, Faculty of Science, Alexandria University, Alexandria, Egypt This paper investigates the ...
For the conventional staggered-grid finite-difference scheme (C-SFD), although the spatial finite-difference (FD) operator can reach 2M th-order accuracy, the FD discrete wave equation is the only ...
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