67,958 reputation
143129
bio website math.ethz.ch/~blatter
location Switzerland
age 79
visits member for 4 years, 3 months
seen 27 mins ago

Nov
18
awarded  derivatives
Nov
17
awarded  Revival
Nov
7
awarded  Good Answer
Oct
29
awarded  Revival
Oct
13
awarded  Nice Answer
Oct
8
awarded  multivariable-calculus
Sep
30
awarded  Explainer
Sep
23
awarded  Nice Answer
Sep
22
awarded  Revival
Sep
20
awarded  optimization
Sep
16
awarded  Enlightened
Sep
16
awarded  Enlightened
Sep
16
awarded  Nice Answer
Sep
16
awarded  Nice Answer
Sep
16
awarded  Nice Answer
Sep
15
awarded  Nice Answer
Sep
15
awarded  contest-math
Sep
9
awarded  Good Answer
Sep
9
awarded  Nice Answer
Sep
8
awarded  Enlightened