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favicon mathoverflow.net > questions

Are there 4-connected planar non-hamilton multi-graphs?

45+ min ago — 

...Herbert Fleischner places great importance on the impact of simplicity... ...Tutte proved the famous result: Every planar 4-connected graph has...

favicon mathoverflow.net > questions

Artin-Schreier theorem for rings (a little different)

41+ min ago — 

...Motivation: Let me recall the well-known Artin-Schreier theorem (AST... ...$K subset L$ a subfield not 'much smaller' than $L$, then the AST...

favicon math.stackexchange.com > questions

How to check the first condition for a random variable involving integration to be the conditional expectation...

2+ hour, 46+ min ago — 

...It suffices to show that $h(y)$ is Borel measurable.... ...Overflow and across the Stack Exchange network - A word or phrase... ...- $begingroup$ That $h$ is a Borel function follows from Fubini's...

favicon mathematica.stackexchange.com > questions

Generating lists where new elements depend on the previous element

1+ hour, 2+ min ago — 

...am interested in using some type of list or table in-built Mathematica... ...a defensive wall that Stone Mages can't easily deconstruct?... ...Overflow and across the Stack Exchange network - How to build...

favicon mathematica.stackexchange.com > questions

3D FEM Memory Problem with Hexahedral Elements & V14 & Apple Silicon

35+ min ago — 

...3D FEM Memory Problem with Hexahedral Elements & V14 & Apple Silicon... ...After using MM V12 for a long time on a MacBook Pro 2011, which... ...The code below ran fine on my old MacBook Pro (Intel) while it had... ...version worked on V12 with Apple Intel....

favicon math.stackexchange.com > questions

What is the exact mathematical definition of a fraction? Can all real numbers be expressed as fractions?...

1+ hour, 2+ min ago — 

...$endgroup$ – Ivan Neretin 34 mins ago - 1 $begingroup$ A fraction... ...$endgroup$ – Anne Bauval 8 mins ago You must log in to answer... ...Overflow and across the Stack Exchange network - Why is the Swiss...

favicon math.stackexchange.com > questions

Solving the PDE through Laplace Transform Method

32+ min ago — 

...Solving the PDE through Laplace Transform Method I have a particular... ...0 ~~~~ 3)~u(x, 0) = 0 $$ I was supposed to solve this using Laplace... ...Overflow and across the Stack Exchange network - How do gravitational... ...Updated Styling for Button Groups - Upcoming initiatives on Stack...

favicon onlinemath4all.com

How to Solve Age Problems with Ratio

5+ hour, 36+ min ago — 

...The present ages of Lenin and Jack are in the ratio 4 : After 6 years... ..., Lenin’s age will be 26 years.... ...The ages of Michael and Benjamin are 2 : After 12 years, their ages... ...The ratio of the present ages of James and Daniel is 5 : Six years...

 


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