a: Differential geometry ~
b: a fabulous city standing at the confluence of two rivers
What: "Differential geometry is like a fabulous city standing at the confluence of two rivers, drawing upon the riches of both river systems. Only differential geometry stands at the confluence of three streams of mathematics; analysis, geometry and algebra."..... See the rest in the linked page.....
The analogy gets mixed up from 2 to 3; That is 2 streams become 3.
Writer: Not Credited
Date: Aug 13 2010 3:58 AM
METAMIA is a free database of analogy
and metaphor. Anyone can contribute or search.
The subject matter can be anything.
Science is popular, but poetry is encouraged.
The goal is to integrate our fluid muses with
the stark literalism of a relational database.
Metamia is like a girdle for your muses,
a cognitive girdle.