@article{Nur2022, 
author = {Muh Nur and Moch Idris and  Firman},
title = {Angle in the space of    p-summable sequences},
year = {2022},
journal = {AIMS Mathematics},
volume = {7},
number = {2},
pages = {2810-2819},
keywords = {completness, vectors, subspaces, ℓp spaces, angles},
url = {https://www.sciopen.com/article/10.3934/math.2022155},
doi = {10.3934/math.2022155},
abstract = {The aim of this paper is to investigate completness of    A that equipped with usual norm on    p-summable sequences space where    A is subspace in    p-summable sequences space and    1  ≤  p  <  ∞. We also introduce a new inner product on    A and prove completness of    A using a new norm that corresponds this new inner product. Moreover, we discuss the angle between two vectors and two subspaces in    A. In particular, we discuss the angle between    1-dimensional subspace and    (  s  −  1  )-dimensional subspace where    s  ≥  2 of    A.}
}