du'o BAI cmavo

djuno modal, 1st place (info source) authoritatively; according to ...; known by ...

On affix form:

identity selbri; = sign; x1 identically equals x2, x3, etc.; attached sumti refer to same thing.

In notes:

x1 knows fact(s) x2 (du'u) about subject x3 by epistemology x4.
x1 abstractly pertains to an exponential/root/logarithmic relationship between the elements of x2 (ordered pair) which are related via concrete relationship x3.