This is a rule in mathematics and logic that says some properties can be transferred onto other things according to rules.
For example: I am a descendant of my father. My daughter is a descendant of me. Therefore, she is – by definition – a descendant of my father as well. The property of being a descendant transfers to my daughter because that’s how lineage works.
The classic example is from math. If a = b
and b = c
then logic dictates that a = c
as well. The property of equality transfers from a
to c
through b
.