[
[1] SOBEZYK, A.: Projections of the space (m) on its subspace (C0), Bull.Amer.Math. Soc. 47 (1941), 938–947.10.1090/S0002-9904-1941-07593-2]Search in Google Scholar
[
[2] BONSALL, F. F. —DUNCAN, J.: Complete Normed Algebras.In: Ergebnisse der Mathematik und ihrer Grenzgebiete, Vol. 80, Springer-Verlag, Berlin, 1973.]Search in Google Scholar
[
[3] FESHCHENKO, I. S.: A suffcient condition for the sum of complemented subspaces to be complemend (2019). DOI: https://doi.org/10.15407/dopovidi2019.01.01010.15407/dopovidi2019.01.010]Search in Google Scholar
[
[4] LINDENSTRAUSS, J.—TZAFRIRI, L.: classical Banach spaces. I. Sequence spaces. In: Ergebnisse der Mathematik und ihrer Grenzebiete, Vol. 92. Springer-Verlag, Berlin, 1977.]Search in Google Scholar
[
[5] MOUMEN, M.—TAOUFIQ, L.—OUKHTITE, L.: Some differential identities on prime Banach algebras, J. Algebra Appl. (2022), DOI:10.1142/S0219498823502584.10.1142/S0219498823502584]Search in Google Scholar
[
[6] MOUMEN, M.—TAOUFIQ, L.—BOUA, A.: On prime Banach algebras with continuous derivations, Mathematica (2022) (to appear)]Search in Google Scholar
[
[7] MOSLEHIAN, M. S.: A survey of the complemented subspace problem, Trends in Math. 9 (2006), no. 1, 91–98.]Search in Google Scholar
[
[8] YOOD, B.: Some commutativity theorems for Banach algebras, Publ. Math. Debrecen 45 (1994), no. 1–2, 29–33.]Search in Google Scholar
