3,462 reputation
1631
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location Mount Blanc
age
visits member for 1 year, 10 months
seen Jul 13 at 3:32

Jul
2
awarded  Curious
Jul
2
awarded  Inquisitive
May
16
accepted Convergence or divergence of a series
May
16
asked Convergence or divergence of a series
May
13
asked Showing a function is differentiable at the origin
May
12
asked The discontinuous or the characteristic function is the boundary
May
10
accepted Showing a set is bounded and closed.
May
10
answered is this vector field conservative?
May
10
answered Calculus question about conservative vector fields
Mar
31
comment question about the oscillation of a function at a point
You are right! I feel so stupid. However, You mentioned that it is monotone decreasing. I think it is increasing?
Mar
31
comment question about the oscillation of a function at a point
Sorry to bother you Professor Shifrin, but I still don't see why $\omega( \delta ) $ is bounded below. Can you explain a little bit more ?
Mar
31
comment question about the oscillation of a function at a point
can the limit be infinite ?
Mar
31
comment question about the oscillation of a function at a point
Well if $\delta < \delta' $, then $B(x_0, \delta) \subseteq B(x_0, \delta ' ) $ taking sups, we have $\omega(\delta) < \omega( \delta') $ ? so $w$ is monotone. but how can this tells me that the limit exists?
Mar
31
asked question about the oscillation of a function at a point
Mar
30
asked Continuity of a function on a box $Q$ implies integrability
Mar
24
accepted Geometry question regarding existence of a quadrilateral
Mar
23
accepted graph of a continuous function is closed
Mar
22
asked Discontinuity of the characteristic function
Mar
22
asked graph of a continuous function is closed
Mar
20
comment If you toss $1000$ fair coins $10$ times each, what is the probability the *some* coin will get $10$ heads?
pure genius Brian.