English

Rick Wicklin 0
Matrices and mattresses

Birds migrate south in the fall. Squirrels gather nuts. Humans also have behavioral rituals in the autumn. I change the batteries in my smoke detectors, I switch my clocks back to daylight standard time, and I turn the mattress on my bed. The first two are relatively easy. There's even

Rick Wicklin 0
A math puzzle solution

I previously wrote about an intriguing math puzzle that involves 5-digit numbers with certain properties. This post presents my solution in the SAS/IML language. It is easy to generate all 5-digit perfect squares, but the remainder of the problem involves looking at the digits of the squares. For this reason,

0
PREMIER takes charge of the Credit CARD Act

The Obama Administration and subprime lenders agree on one thing: Borrowers with bad credit lack the clout - both financial and political - to rebuild their lives without help from somebody ... somewhere. Where they disagree - royally - is over how. The Credit Card Accountability, Responsibility and Disclosure Act of