Fred Kline

Seattle, WA

Age: 71

Contact: rudytoody.AT.comcast.DOT.net

I retired in 2006 and bought Mathematica and a stack of math books with the goal to teach myself to become a world-class mathematician. I am on pace to achieve that goal sometime shortly after the next Ice Age.

I consider myself a Mathematical Mutt (no papers) who occasionally ventures off the back porch to play in the yard with the big dogs.

I donate regularly to the The OEIS Foundation.

When I look at the patterns, I can hear the wheels turning. When I look at the math, I find out the hamsters have died.

1d
comment How does a mathematician sees the numbers?
When I look at the patterns, I can hear the wheels turning. When I look at the math, I find out the hamsters have died. (from my profile)
1d
comment taylor serise ......
-1, You asked this earlier, math.stackexchange.com/q/1208327/28555
Mar
26
comment Uninteresting questions with interesting answers
@bubba, Carpenters call it kerf and they must account for it to build things. Sawmills do the same to determine board-feet of a log. The volume of this kerf is the sawdust.
Mar
24
comment Can a simple plot be used as a proof-without-words?
Sorry, I switched accepted answers. I like both, but decided to go with the induction.
Mar
24
accepted Can a simple plot be used as a proof-without-words?
Mar
24
revised Can a simple plot be used as a proof-without-words?
updated info based on comments
Mar
24
comment Can a simple plot be used as a proof-without-words?
@Henry, could you combine your comments into an answer? I want to cite it, so I need a permalink.
Mar
24
asked Can a simple plot be used as a proof-without-words?
Mar
23
comment Is there a way to rewrite this recursive function so that it can be calculated in linear time?
oeis.org/A000108 The Catalan numbers
Mar
15
comment Technical term for summation of sequential numbers
If $f(n)$ as shown by @Nilan is not divided by $2,$ then it is the $n$th pronic number.
Mar
15
comment Right Triangle Theorem/terminology
You don't draw the perpendicular to the hypotenuse.
Mar
15
comment The preimage of a continuous function with a connected image being disconnected
Instead of changing the title, simply click on the check-mark next to the answer you like best.
Mar
14
comment A guide on how to approach learning programming
@TheEmperorofIceCream, I'm sorry. I meant filet of cod.
Mar
14
comment A guide on how to approach learning programming
Those books use both Matlab and Mathematica for their examples.
Mar
14
comment A guide on how to approach learning programming
@TheEmperorofIceCream, Can I order a filet of code?
Mar
14
comment A guide on how to approach learning programming
Here is one option: math.stackexchange.com/q/962742/28555
Mar
11
comment Tic-Tac-Toe Game
Slightly off topic: When I was in high school, 55 years ago, a friend built a shoe-box-sized tic-tac-toe game out of pieces of old pin-ball machines. It had nine toggle switches and nine pairs of lights (red/green to indicate player's moves). You would reset the game and play until you won. It would learn, so eventually it would never lose. It didn't take $9!$ games to get to that point.
Mar
11
accepted Why the imaginary half circles is this plot?
Mar
11
asked Why the imaginary half circles is this plot?
Feb
24
accepted $k$-tuple conjecture.
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