Bourbaki

Proposition 5

Tag 08E2, permanent. Cite it as [Bourbaki, Tag 08E2].

Functions of a Real Variable, chapter V, § 1. COMPARISON OF FUNCTIONS ON A FILTERED SET

Let f1,f2f_1, f_2 be two functions in H(F,V)\mathscr{H}(\mathfrak{F}, V) and gg a function in H(F,R)\mathscr{H}(\mathfrak{F}, \mathbf{R}). Then the relations f1≪gf_1 \ll g and f2≪gf_2 \ll g imply f1+f2≪gf_1 + f_2 \ll g.

Moreover, the same argument as in prop. 3 of V, p. 213 shows that:

Bourbaki puts the proof directly after the statement, so what is above is the statement and its proof together.

Cited by

Nothing.

Cites

Transcribed from the printed volume. Not translated.