The Schauder estimate for the Laplace equation was traditionally built upon the Newton potential theory. Different proofs were found later by Campanato [Ca], in which he introduced the Campanato space; Peetre [P], who used the convolution of functions; Trudinger [T], who used the mollification of functions; and Simon [Si], who used a blowup argument. Also a perturbation argument was found by Sa...

Initially, second-order necessary and sufficient optimality conditions in terms of Hadamard type derivatives for the unconstrained scalar optimization problem φ(x)→ min, x ∈ R, are given. These conditions work with arbitrary functions φ, but they show inconsistency with the classical derivatives. This is a base to pose the question, whether the formulated optimality conditions remain true when ...

Pembelajaran kooperatif model jigsaw adalah salah satu dari pembelajarankooperatif yang bisa diterapkan dalam pembelajaran khususnya pendidikan anakusia dini melibatkan siswa untuk belajar bersama kelompok-kelompok keciluntuk mencapai tujuan suatu pembelajaran. tipejigsaw, dicirikan oleh struktur tugas, dan penghargaan kooperatif, yangmelahirkan sikap ketergantungan positif diantara sesama sisw...

Professor Dan Eisikowitch (Dini), one of the greatest researchers in 10 pollination and botany, has passed away (1936-2022). Dini died on 19 July, 2022 at 11 age 86. An obituary.