Showy Flowers

Showy Flowers

Every day, new flowers. Sometimes spectacular, I  love the Epiphyllum, which are cacti although you might not think so. Big showy flowers, white or yellow or orange or red, that explode suddenly and die off quickly. Very Shelly-esque. PausePlayPlayPrev|Next I. The...

The Worst Thing Ever

NPR had some great programming about the 70th anniversary of the Hiroshima. One survivor said he wanted people to remember…the terrible blast, the subsequent radiation horror. I think he said it was the worst thing ever. It was. So was the holocaust. So was the...
Literature and Exile | The Nation

Literature and Exile | The Nation

“…he didn’t believe in countries and the only borders he respected were the borders of dreams, the misty borders of love and indifference, the borders of courage and fear, the golden borders of ethics.” I love this 2000 talk by Roberto Bolaño....

Notes on a Caltech math seminar presented by Gongguo Tang

Discretization is more efficient if you use an interior point. Phase transition – fraction of sparsity level. NOISY DATA Gaussian elements for Gaussian noise, the regularization parameter. Sparse ombunction of sunusoids. Random phases, fading amplitude....