Who has Proposed that ln 2 is a Curvature Invariant?

The concept of ln 2 

$\ln 2$

as a "Curvature Invariant" (specifically termed the Obidi Curvature Invariant or OCI) has been proposed by John Onimisi Obidi. 

• Context: This proposal is part of the "Theory of Entropicity" (ToE), a theoretical framework developed by Obidi, which suggests that
  

  $\ln 2$
  is not merely a statistical conversion factor for bits to entropy (
  

  $k_B\ln 2$
  ), but a fundamental, geometric, and physical constant defining the smallest non-trivial reconfiguration of the entropic field.
• Significance: Within this theory, "erasing" a bit is interpreted as "flattening" a curvature of
  

  $\ln 2$
  in the entropic field, and this value defines a "quantum of distinguishability" in the structure of reality. 

Note: In mainstream differential geometry,

$L^{n/2}$

-norms of the Weyl tensor or Ricci curvature are commonly studied as conformal invariants (often related to Yamabe constants), but the specific identification of the value "ln 2" as a fundamental geometric "Obidi Curvature Invariant" is unique to Obidi's Theory of Entropicity (ToE).