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Rita Pascual

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if x^ u = y ^x and x = 2y
Find the value of x and y ?
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Gerhard Burger's profile photoLaurent Cournac's profile photo
2 comments
 
but when you solve for x and y  wolframalpha yields no result
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Paddy McCarthy

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New draft Rosetta Code task and starting Python solution.
Take an integer n, greater than zero. Form the next n of its series by reversing the digits of the current n and adding the result to the cuurent n. Stop when n becomes palindromic - i.e. the digits of n in reverse order == n. The above recurrence relation when applied to most starting numbers n ...
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Paul Hartzer's profile photoPaddy McCarthy's profile photo
2 comments
 
+Paul Hartzer
No likely about it, but we are dealing with infinite length sequences here.
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Ruzica Imamovic

Discussion  - 
 
Vecina ljudi zna tablicu mnozenja sa 5, ali kada se radi o velikim brojevima, teze je izvrsiti takvo mnozenje.
Sljedeca tehnika je jednostavna.
Dati broj podijeliti sa 2, a zatim pomnoziti sa 10. Ako dati broj podijeljen sa 2 daje cijeli broj dodamo samo 0 (nulu), a ako ne zanemarimo zarez.

2682*5=2682/2*5*2=1341*1=13410

5887*5=5887/2*5*2=2943,5*10=29435
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Ruzica Imamovic

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José Luis Tajada Herráiz's profile photoKrittika Bhattacharyya's profile photoSuraj Kanu's profile photoTakashi Kagaya's profile photo
11 comments
 
Uff...
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Rita Pascual

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What do u think about this
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sam thui's profile photoДмитрий Ташлыков's profile photoKarsten Uredat's profile photo
 
All are easy to understand with little effort, except the last one, even I can prove it :).
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enlong chiou

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Realization of sieve of Eratosthenes can calculate p<x and p>x part proportion to power of z(n), Bernoulli numbers time s!^2/n! in Pascal triangle can get next one, include odd one, equation similar one from random matrix, 8640 close to 25740/3, 24024 close to 25740, Bernoulli numbers can use sequence of golden ratio express by continuous fraction, even show up in SR, M=m/(1-(V/v)^2)^(1/2), let m/M=V/v=x get x^2+x=1 equation of golden ratio, can turn into x=y^2-(-1)(y=x*i) fractal equation of chaos but have order in it like random matrix of energy level of atom which be represent by nontrivial zero which are reverse of trivial zero which have nice ordered equation 2*n^2 for single atom(C*H=E*R). nature hide  it's true face pretty well, at final golden ratio is it's ultimate law.
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Bob Looter's profile photoKarsten Uredat's profile photo
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Krystal Zhou

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On Optimal Ordering of Service Parameters of a Coxian Queueing Model with Three Phases
We analyze a Coxian stochastic queueing model with three phases. The Kolmogorov equations of this model are constructed, and limit probabilities and the stationary probabilities of customer numbers in the system are found. The performance measures of this model are obtained and in addition the optimal order of service parameters is given with a theorem by obtaining the loss probabilities of customers in the system. That is, putting the greatest s...
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Kevin Clift

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Pronunciation Guide Famous Mathematicians
by Andrew Marcinkiewicz via Lucas Vieira Barbosa

How many times have you read the names of a Mathematician in a book or online and wanted to do justice to their pronunciation?

Maths student, Andrew Marcinkiewicz (who is on G+), has produced a helpful guide to the pronunciation of names of famous Mathematicians alongside some of their most notable theorems and lemmas. He includes an audio file and the International Phonetic Alphabet (IPA) code for each one on his blog.
   
In my mathematical education, I often come across theorems and lemmas which are named in honour of great mathematicians. Unfortunately, There are not many resources to consult when it comes to correct pronunciation of these names. Many students simply overlook the importance of correct pronunciation and often find themselves unable to communicate with teachers and other students. Personally, I have heard very strange (and sometime hilarious) pronunciation of names like Galois, or Weyl, even from some rather more experience mathematical students.

This blog is an attempt to resolve these kinds of mathematical pronunciation illiteracy that seems to be so widespread in mathematical communities. This is not an easy or quick job. I tend to consult native speakers of the language of the name in question to get the right pronunciation of these names. Nevertheless, people have different accents and if I hear different (acceptable) pronunciation I emphasis them in my posts.

Here (blog index): http://goo.gl/uLnnR3

   
IPA (Wikip): https://goo.gl/2xPLRm

   
Lucas Vieira Barbosa (blog): http://goo.gl/JZbj7P


Image: Public Domain https://goo.gl/gxT1mo
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Jerzy Kaltenberg's profile photoKevin Clift's profile photorosario casamayor's profile photoKonstantinos Michailidis's profile photo
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Amadeo Artacho

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Un poco de humor gráfico acompañado de una sencilla explicación...
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Regla de tres... ¿En qué consiste la regla de tres? ¿Qué tipos de proporcionalidad puede haber? Regla de tres simple directa e inversa.
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miel jodi

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vikas v's profile photonateracer1000's profile photomatemática, espíritu y arte's profile photo瑋翔程's profile photo
4 comments
 
kya sexy hai!!
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Kevin Clift

Discussion  - 
 
 
Geometry Game

The popular, Euclid the Game, and its various geometric challenges is now available in beta on iOS as well as online.  The creator, Kasper Peulen, and the iOS developer, David Hallgren, are looking for feedback on the beta and Kasper is also looking for someone to contribute some or all of an +Android port.

Here: (Website Tutorial/Play) http://goo.gl/5XNLxt

Github: https://goo.gl/w7Un2r

Beta Participation (mailto): mailto:beta@euclidthegame.com

Image: Aldoaldoz https://goo.gl/ABajS9
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瑋翔程's profile photoSreedharan Km's profile photo
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Hi, Math Enthusiasts. 

I found again today, that the awareness about mathematical concepts is somewhat arbitrary.
I think every scientist has to comprehend everything completely, making it very difficult to advance to a certain state.

The comprehension in particular is bothering me.
e.g.:  Newton might have been much more advanced in his theories, than we can comprehend !

Does anybody share that thought?
In particular theory of relativity is not really a new thing. It is rather just a concept within the frame of newtons mathematical groundwork.

What is bothering me is, if newton figured out much more than anybody would be able to comprehend; then we barely touched the surface of higher concepts. Which are of course only valid in his mathematical system, which could be superior to others...
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Don David Alegria's profile photoChris Thompson's profile photo
15 comments
 
+Don David Alegria . . . I wrote what I meant.
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Ruzica Imamovic

Discussion  - 
Posmatrajmo broj 142 857 Posmatrani broj pomnozimo brojevima od 1 do 6
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Vineet George

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I have found a method to represent a word clearly and distinctly with a single numerical identity. For a particular word will have a particular numerical identity. The method to determine a sentence with a single numerical identity is in process.  
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Vineet George's profile photoFloppy Densetsu's profile photoKarsten Uredat's profile photo
4 comments
 
Oh, it is a sort of computer term. I'm not sure how it works, but they feed the input data into a system which outputs a unique number that is specific to the input provided. It's used for encryption stuff mostly. I was kinda jokingly tossing that out there.

Maybe a checksum is more appropriate to what I was talking about, but that is where you read all the bits of a big file, and I guess they add it all up to produce one "sum" value which represents the file, and if any single bit of the file is different from the original, the checksum values differ and you can tell that there was a problem with a transfer or something.

I had not read your notes when I commented. It looks like you have put a lot of thought into the system you came up with, I hope you catch the eye of someone who can really interpret and appreciate what you are trying to say there.

Here is one explanation of "hashing" that I found: http://www.webopedia.com/TERM/H/hashing.html
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Rita Pascual

Discussion  - 
 
factoring in algebra
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Srinivasan Venkatarajan's profile photoKarsten Uredat's profile photo
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pett Pette

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---go ye and speak her language (in whatever form you can) for she will bless you....
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strontiumXnitrate's profile photoEvan Mathias's profile photoharshavardhan rajopadhye's profile photo
12 comments
 
+strontiumXnitrate because I used daddy for maths... seemed to marry well.
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Rita Pascual

Discussion  - 
 
Find out
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6.5 Fingers's profile photoKarsten Uredat's profile photoHatice Zor's profile photoDaniel Mateescu's profile photo
60 comments
 
-1
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An idea:
Can the sequence used in the Collatz Conjecture be reduced to a sort of a sequence similar to the Goodstein Sequence, from which some extension of Goodstein's Theorem may be used to imply the Collatz Conjecture?
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Vedanth Bhatnagar's profile photoMax Caulfield's profile photo
5 comments
 
+Vedanth Bhatnagar no ı said in a Good way
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Rita Pascual

Discussion  - 
 
Geometric formula.
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Karthick Srivatsan's profile photoMA VI's profile photoawad hasan's profile photonateracer1000's profile photo
10 comments
 
Merci pour le rappel.
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Krystal Zhou

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MichaelKingsfordGray's profile photoShlomo Yona's profile photoKarsten Uredat's profile photo
2 comments
 
Any available R or Python code package for this? It should be interesting to try this out on some real data sets in several domains
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