# Search results

Mathematical Methods in the Applied Sciences > 47 > 9 > 7350 - 7371

Mathematical Methods in the Applied Sciences > 46 > 1 > 438 - 460

Mathematical Methods in the Applied Sciences > 45 > 17 > 10775 - 10797

Mathematical Methods in the Applied Sciences > 44 > 14 > 11469 - 11481

Mathematical Methods in the Applied Sciences > 43 > 15 > 8568 - 8594

Mathematische Nachrichten > 293 > 1 > 147 - 157

Journal of Mathematics and Applications > 2020 > Vol. 43 > 99--112

Mathematical Methods in the Applied Sciences > 42 > 18 > 6706 - 6732

Advances in Difference Equations > 2019 > 2019 > 1 > 1-19

Mathematical Methods in the Applied Sciences > 42 > 3 > 969 - 981

Acta Mathematica Scientia > 2019 > 39 > 6 > 1568-1578

Demonstratio Mathematica > 2019 > Vol. 52, nr 1 > 437--450

Boundary Value Problems > 2018 > 2018 > 1 > 1-16

Advances in Difference Equations > 2018 > 2018 > 1 > 1-15

*z*-transform method, we study the Ulam stability of linear difference equations with constant coefficients. To a certain extent, our results can be viewed as an important complement to the existing methods and results.

Journal of Fixed Point Theory and Applications > 2018 > 20 > 4 > 1-16

Bulletin of the Malaysian Mathematical Sciences Society > 2019 > 42 > 6 > 3187-3211

*n*-th order with constant and nonconstant coefficients. As an application of the main results, we also obtain the Hyers–Ulam stability of the Cauchy–Euler differential equations...

Journal of Fixed Point Theory and Applications > 2018 > 20 > 2 > 1-10

*X*be a complex linear space, endowed with an extended (that is, admitting infinite values) norm. We prove a fixed point theorem for operators of the form $$p_3 \mathcal {L}^3 + p_2 \mathcal {L}^2 +p_1\mathcal {L}$$ p3L3+p2L2+p1L , where $$ \mathcal {L}:X\rightarrow X$$ L:X→X is linear and $$p_1,p_2,p_3$$ p1,p2,p3 are fixed scalars. That result has been motivated by some issues arising in Ulam...

Bulletin of the Malaysian Mathematical Sciences Society > 2019 > 42 > 5 > 2681-2699

Archiv der Mathematik > 2018 > 111 > 2 > 177-186

Mediterranean Journal of Mathematics > 2018 > 15 > 1 > 1-21