[see also: concept, notion, objective, definiteness
Some of the basic ideas from functional analysis are also included.
The main idea of the proof is to take......
The idea behind our use of the map σ is that......
The idea is to relax the constraint of being a weight function in Theorem 3.
It is this idea that underlies some of the results of .
This idea goes back at least as far as .
Apart from a few embellishments necessitated by some technical difficulties, the ideas differ very little from those used to prove Lemma 4.
Our proof of Theorem 2 is based upon ideas found in [BN].
The proof makes use of many of the ideas of the general case, but in a simpler setting.
Although the idea is simple, its implementation is complicated by the fact that......
It is a pleasure to thank R. Greenberg for bringing his criterion for...... to our attention, and for generously sharing his ideas about it.
We shall draw heavily on ideas from .
To fix ideas, assume that M is a pentagon.
a stimulating <clever/original/alternative/basic> idea