A conditional dilation equation. (Summary).
A conjecture of Gy. Petruska.
A consistency equation for three geometries.
A contribution to a theorem of Ulam and Mazur.
A converse to the Lions-Stampacchia theorem
In this paper we show that a linear variational inequality over an infinite dimensional real Hilbert space admits solutions for every nonempty bounded closed and convex set, if and only if the linear operator involved in the variational inequality is pseudo-monotone in the sense of Brezis.
A converse to the Lions-Stampacchia Theorem
In this paper we show that a linear variational inequality over an infinite dimensional real Hilbert space admits solutions for every nonempty bounded closed and convex set, if and only if the linear operator involved in the variational inequality is pseudo-monotone in the sense of Brezis.
A Cosine Functional Equation with Restricted Argument. (Short Communication).
A discrete monetary economic growth model with the MIU approach.
A family of symmetric biadditive nonbilinear functions.
A few remarks on almost -polynomial functions
A few remarks on automorphic functions.
A fixed point approach to the fuzzy stability of an additive-quadratic-cubic functional equation.
A fixed point approach to the stability of a functional equation of the spiral of Theodorus.
A fixed point approach to the stability of a general mixed AQCQ-functional equation in non-Archimedean normed spaces.
A fixed point approach to the stability of a generalized Cauchy functional equation.
A fixed point approach to the stability of a quadratic functional equation in -algebras.
A fixed point approach to the stability of an additive-quadratic-cubic-quartic functional equation.
A fixed point approach to the stability of an equation of the square spiral.
A fixed point approach to the stability of Pexider quadratic functional equation with involution.
A fixed point approach to the stability of quadratic functional equation with involution.