A new 2-inner product on the space of p -summable sequences

Authors

1 Department of Mathematics, Bitlis Eren University, 13000, Bitlis, Turkey

2 Department of Mathematics, Institute of Technology Bandung, Bandung 40132, Indonesia

Abstract

In this paper, we wish to define a 2-inner product, non-standard, possibly with weights,
on  p . For this purpose, we aim to obtain a different 2-norm  ., .  2, v , w , which is not equivalent to
the usual 2-norm  ., .  p on  p (except with the condition p = 2 ), satisfying the parallelogram law. We
discuss the properties of the induced 2-norm  ., .  2, v , w and its relationships with the usual 2-norm on
 p . We also find that the 2-inner product  ., .|.  v , w is actually defined on a larger space.

Keywords