Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Orthogonal forms and orthogonality preservers on real function algebras
  revisited   In 2014, we determine the precise form of a continuous orthogonal form on a
commutative real C$^*$-algebra. We also describe the general form of a
(not-necessarily continuous) orthogonality preserving linear map between
commutative unital real C$^*$-algebras. Among the consequences, we show that
every orthogonality preserving linear bijection between commutative unital real
C$^*$-algebras is continuous. In this note we revisit these results and their
proofs with the idea of filling a gap in the arguments, and to extend the
original conclusions.

34
The categories of this paper are: chem-ph
24
The categories of this paper are: dg-ga
31
The categories of this paper are: ao-sci
19
The categories of this paper are: eess
35
The categories of this paper are: mtrl-th
37
The categories of this paper are: supr-con
10
The categories of this paper are: q-bio
3
The categories of this paper are: physics
0
The categories of this paper are: hep-ph
14
The categories of this paper are: math-ph
12
The categories of this paper are: nucl-th
22
The categories of this paper are: chao-dyn
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The categories of this paper are: plasm-ph
23
The categories of this paper are: solv-int
9
The categories of this paper are: nlin
27
The categories of this paper are: comp-gas