Recent content by volican
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High School Does the speed of sound change in metal when heated?
I'm thinking it does because the density would be different. -
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High School Does the speed of sound change in metal when heated?
Is the speed of sound different through the same piece of metal when it is heated compared to when at ambient temperature? -
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Graduate Reducing computation for large power sets
yes they will be non-negative- volican
- Post #13
- Forum: Set Theory, Logic, Probability, Statistics
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Graduate Reducing computation for large power sets
Yes it is for all unique combinations - so ABC is included - otherwise the number of combinations wouldn’t be so large. It is the outline shape I am really interested in. Any thoughts how to get that without having to plot the points at all? At the moment I am thinking of plotting the points...- volican
- Post #11
- Forum: Set Theory, Logic, Probability, Statistics
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Graduate Reducing computation for large power sets
Yes all number of unique combinations (order does not matter) are possible. Duplicates are not included. To generate the set I've just used binary numbers. The problem is that at 50 options the number of possible combinatins is huge. I have not had chance to try it yet but I think that it does...- volican
- Post #9
- Forum: Set Theory, Logic, Probability, Statistics
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Graduate Reducing computation for large power sets
Thanks, I will definitely give that a try with a convex hull algorithm. It's for comparing different options.- volican
- Post #7
- Forum: Set Theory, Logic, Probability, Statistics
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Graduate Reducing computation for large power sets
any thoughts on how to reduce the number of points? What I am really aiming for is to be able to determine what the outline shape of the distribution would be just from looking at the initial data. Do you think it would be useful to run the program and save the results for 0 options all the way...- volican
- Post #5
- Forum: Set Theory, Logic, Probability, Statistics
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Graduate Reducing computation for large power sets
Appologies. 2^50 is the total number of possible combinations for when I have 50 options. Some examples for the simplified case above being e.g. AB, BC, ABC, CD, ADC ... In the case above there would be 2^4 possible combinations of A,B,C, &D- volican
- Post #3
- Forum: Set Theory, Logic, Probability, Statistics
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Graduate Reducing computation for large power sets
To illustrate my problem say I have the following table: Option, x , y A , 25 , 30 B , 5 , 12 C , 3 , 9 D, 12, 13 I want to create a graph of every possible combination in the set where the x values are added and the y values are added. For example say it was...- volican
- Thread
- Computation Power Sets
- Replies: 15
- Forum: Set Theory, Logic, Probability, Statistics
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Undergrad Predicting new polynomials from known ones
Not too sure which forum this would be best suited to. Say I have lots of polynomials that have been obtained through conducting experiments, with the different coefficients in the polynomial representing different physical properties that have been changed in each case. How could I use this...- volican
- Thread
- Polynomials
- Replies: 2
- Forum: Set Theory, Logic, Probability, Statistics
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Reed Solomon Division: Understanding M(x) & G(x) Division
Thanks again. For your G(x) using the hex numbers did you just multiply out the brackets? Copy and pasting into wolfram alpha gives a much longer expression with different coefficients.- volican
- Post #14
- Forum: Programming and Computer Science
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Reed Solomon Division: Understanding M(x) & G(x) Division
I have an application that will output numbers comprised of the digits 0-9 (numbers like 47565, 34489, 92838 – this will be the value outputted from an ADC on a microcontroller). I want to provide some FEC via Reed Solomon encoding. I am going with GF(24) and will just not use the values above...- volican
- Post #12
- Forum: Programming and Computer Science
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Reed Solomon Division: Understanding M(x) & G(x) Division
What would you use for the irreducible prime polynomial for GF(11)? For the multiplication table what I did was just create a table (from 0 - 10) where if the product is less than 11 you just use the product value but if it is greater than 11 use the modulus remainder. Do you mean that you...- volican
- Post #10
- Forum: Programming and Computer Science
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Reed Solomon Division: Understanding M(x) & G(x) Division
Thank you very much for your kind help. Really appreciated :)- volican
- Post #9
- Forum: Programming and Computer Science
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Reed Solomon Division: Understanding M(x) & G(x) Division
ah thanks, I am wanting to encode numbers that will comprise 0-9. Could I just do GF(2^4) and just not use the additional numbers?- volican
- Post #7
- Forum: Programming and Computer Science