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Description: Mathematical discussions and pursuits.
 

The accuracy of the Calculus 
  In the abstract realm of polynomial functions there is exactitude. There is a zero point derivative. But in real world problems(physics) there is not complete exactness. To find a slope you hone in on a infinitely small part of the real world curve but you cannot make it infinitely small. That would require infinite calculations so you... more »
By BURT  - 10:09am - 1 new of 1 message    

There is no time dilation or physical length contraction. 
  ... We can discuss that later. Meanwhile, let's look at the point now being made: ... Regardless of how the Compton Effect works, the point is this: The Compton effect is an explanation of how a red shift could happen without any expansion of anything at all, thus without any big bing. ... The point is: If, as science believes, matter can be made from... more »
By glird  - 10:08am - 2 new of 2 messages    

Fixed odds bet 
  Q: Find a Black-Scholes closed formula to price this fixed odds bet. I want to win N if over the next M days, the P has a high-low range (exceeding/not exceeding) Q points. For example: I get $50 if over the next 5 days the FTSE100 has a high-low range exceeding 2 points. For example, if the FTSE100 has a range of low=5,251.41 and high=5,253.94 over the next 5 days, I get $50 (because high – low = 2.53 > 2).... more »
By Yves  - 9:24am - 1 new of 1 message    

I choose three 
  Three physics or science blogs I find interesting today. [link] [link] [link]
By 3 Physics Blogs  - 8:09am - 1 new of 1 message    

Do you believe in Physics ? 
  Do you believe in Physics ? You don’t have to be so sure. Why ? === . How does Physics look now? ...The basis of the Physics consists of: 1. Abstract ‘ inertial movement’. 2. Abstract ‘ideal gas and ideal particles.’ 3. Abstract ‘absolute black body.’ 4. Abstract ‘entropy’ 5. Abstract SRT negative 4 - D space,... more »
By socratus  - 7:21am - 1 new of 1 message    

Analysis : Is there a name for this? 
  Hi, Suppose f and g are functions having the same domains such that f is monotonic increasing/decreasing on a given interval iff g is monotonic increasing/decreasing on that same interval. Is there a name for such pairs of functions? (I ask this question since it arises in stat estimation theory with... more »
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By hero  - 2:09am - 1 new of 1 message    

Order theory question 
  Hi! It's seems a simple problem and I could solve it myself, but I want to share it with sci.math. Let A is a poset and let Z is its subset (Z is also a poset with induced order). Let S is a subset of Z, let t in A. Let "inf^Z S" is defined (narrowing our problem we could assume that Z is a complete lattice, but I want to consider the more general case).... more »
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