@article{107263, author = {Tulsi Dass Narang}, title = {Approximation relative to an ultra function}, journal = {Archivum Mathematicum}, volume = {022}, year = {1986}, pages = {181-186}, zbl = {0608.41016}, mrnumber = {868532}, language = {en}, url = {http://dml.mathdoc.fr/item/107263} }
Narang, Tulsi Dass. Approximation relative to an ultra function. Archivum Mathematicum, Tome 022 (1986) pp. 181-186. http://gdmltest.u-ga.fr/item/107263/
Ein kriterium zur charakterisierung von sonnen, Mathematika 13 (1971), 181 -188. (1971) | MR 0342935
On properties of sets related to f-projections, J. Math. Anal. Appl., 73 (1980), 457-465. (1980) | MR 0563996 | Zbl 0476.46012
Remarks on some problems in linear topological spaces over fields with non-archimedean valuation, Proc. Kon. Ned. Akad. Wetensch., A 71 (1968), 484-496. (1968) | MR 0247411
Characterizations of elements of best approximation in non-archimedean normed spaces, Arch. Math., 20 (1984), 10-12. (1984) | MR 0817554
On f-best approximation in topological spaces, To appear in Arch. Math. | MR 0833135 | Zbl 0585.41029
Best approximation in nonarchimedean normed spaces, Math. Forum, 5 (1982), 29-32. (1982)
On f-farthest points of sets, Communicated.
Applications of fixed point theorems to problems of optimization and best approximation, Non-linear Analysis and Applications, Marcel Dekker, Inc. New York, Edited by S. P. Singh and J. H. Burry (1982), 393-400. (1982)