V. Havel, President of the Czech Republic, honoring J. Necas by the Order of Merrit of the Czech Republic, Oct. 1998   Blow-up or regularity?   With P.Drabek   From left to right: I.Hlavacek, H.Wu, J.-C.Nedelec, J.N., J.Kacur   Singing with J.Kacur   From left to right: I.Hlavacek, J.N., A.Kufner, J.Kacur, K.Kozel   With H.Wu and M.Lukacova   With V.G.Mazja and E.Meister   With K.Segeth   With J.Kurzweil, K.Rektorys, and I.Netuka   with J.Kacur   60th birthday of J.N., 1989. From left to right: J.Kacur, O.John, X.X., J.Stara, J.Maly, L.Pick, J.Felcman, M.Feistauer, V.Sverak, J.N., M.Rokyta, J.Kurzweil, P. Kloucek.   With L.S.Sobolev   With Jaroslav Kurzweil (right)   With H.Triebel   With S.M.Nikolskij   From left to right J.Stara, S.Fucik, J.N., P.Doktor   With J.Soucek (left), S.M.Nikolskij (right)   At High school in Melnik, 1948   With L.S.Sobolev, N.N.Maslenikova, S.Kruzhkov   In Novosibirsk with I.Marek, A.Kufner and S.L.Sobolev   In Dekalb during his Presidental Research Professor award in 1996   With J.Polasek