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OHIDA ISLAM

Discussion  - 
 
Mathematics is the only metaphysics...............
#mathematics  
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K. “MrPs4All” .Man's profile photoharshavardhan rajopadhye's profile photoalessio milani's profile photo
 
All sciences are a branch of philosophy when you think about it. 
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Rita Pascual

Discussion  - 
 
Find the value of x
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Alex K's profile photosrinivasa reddy's profile photoJonathan Duncan's profile photoErnest Rider's profile photo
4 comments
 
90 + 36. And formed by diameter any point on circle 90 + equal angles formed by same chord on any point of the circle 36
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Rob Laney

Math Questions  - 
 
(0/1) > (1/0)
Agree or disagree?
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Carlos Eduardo Olivieri's profile photo
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Paul Smith

Freq Posts/Tricks  - 
 
Most people imagine maths is something like a slow cooker: very useful, but pretty limited in what it can do. Maths, though, isn't just a tool for solving a specific problem - and it's definitely not something to be afraid of.
Most people imagine maths is something like a slow cooker: very useful, but pretty limited in what it can do.
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Hugo A. G. V. Rosa (Sr. X)'s profile photoChirs Lim's profile photoColin MacRae's profile photo
3 comments
 
Now suppose all of your ingredients are infinite dimensional.
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Sean Walker

Videos/Pictures  - 
 
Math Art:  Rotated Rotations of Tori

That would make a decent title for a SciFi novel. ;) 
 
Twisted About

Sometimes, this is what it's all about. Attempts to reach out and right circumstances just add to the complexity. Look within to reduce the turmoil. Though it may not be in your nature, your best chance at balance is finding your center.

This animation was created with Processing:
   https://processing.org/

ImageMagick:
   http://www.imagemagick.org/script/index.php

Eclipse for Java:
   http://www.eclipse.org/downloads/packages/eclipse-ide-java-developers/keplersr1

Apache Math Commons:
   http://commons.apache.org/proper/commons-math/
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chuck grinnell's profile photoAnnie Taouktsoglou's profile photoAllan Mwenjah's profile photoRamesh Choubey's profile photo
 
looks like gyro
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Math

Videos/Pictures  - 
 
A gif animation of the Binomial Cube
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Mohammed Shapique's profile photoAnnie Taouktsoglou's profile photoLucas Oliveira's profile photoAndrés Cerquera's profile photo
 
Nice visual!
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apollo moore

Math Questions  - 
 
Assuming that it takes 1 second to recite any number, calculate how long (in years) it would take you to count to 1,000,000,000,000. [disregard leap years]
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Vincent Iannone's profile photoapollo moore's profile photo
12 comments
 
+Vincent Iannone Qué malo!
 ·  Translate
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Zach Cox

Videos/Pictures  - 
 
Spot On - To say an object and its representation are not the same thing would seem like a tautology, but as was so very well stated in the video, as a rule, we do NOT make this distinction.  And further, you are stuck when you plead that you just have not yet found the 'proper' representation of the the object to remove this objection that it and its representation are not the same thing.

And it is a very good argument when applied to the idea that 'Strong-AI' is very far away.
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chuck grinnell's profile photoManuel Alzurutt's profile photoAndrés Cerquera's profile photoshobana s's profile photo
9 comments
 
+Zach Cox Yes you are right it seems like you did say that. Sorry, I misread there. However I don't understand what you mean by "less conservative" so perhaps you can clarify what you mean by that?
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Logisches Denken gefragt: Begründe jede Zahl logisch!
Logical thinking questioned: Justify each number logically
Each character is a number 0 to 9.
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Alexandr Rassadin's profile photoManuel Alzurutt's profile photo
 
22315130
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Colin MacRae

Math Questions  - 
 
This is a bit of an odd question for the community, but I'm struggling to find a solid answer, so here goes.

Unless specified to the contrary, does the set of natural numbers contain non-terminating numbers? Whatever the answer, has this always been the case?
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Colin MacRae's profile photoLayra Idarani's profile photo
16 comments
 
The successor function doesn't create any numbers of infinite length. It doesn't create any infinite strings.
What we get is a sequence of numbers, each of whom are finite, while the sequence is infinite in length. But the sequence itself is not a natural number, nor is the limit of the sequence a natural number.
As for S being pairwise: nope. Addition takes two natural numbers and produces a third natural number. S is not provably the sum of two natural numbers, or at least your construction does not construct it as the sum of two natural numbers; it constructs it as a sum of an infinite sequence of natural numbers, and unless I'm sorely mistaken, two is not infinite.
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Math

Videos/Pictures  - 
 
 A single point in space can spin continuously without becoming tangled. It returns to its original configuration after spinning 720 degrees.
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Annie Taouktsoglou's profile photoJuan Lahera's profile photoMitch Harrison's profile photoStephen Syputa's profile photo
17 comments
 
The red one goes through the blue one while it comes down. Or is it a trick of my eyes?
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Rita Pascual

Discussion  - 
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Phillip Adkins's profile photo
 
4pi
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Rita Pascual

Discussion  - 
 
Solve it please
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Son Dang's profile photoWilliam Taylor's profile photo
2 comments
 
You know how, take all the variables, we olf., I see you see me, I'm nothing but an observer, don't hate.
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miel jodi

Math Questions  - 
 
 
WHAT WILL BE THE ANSWER??
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Lucario The Pokemon's profile photoanwesh varada's profile photoBrent L's profile photoMarko Shiva Pavlovic's profile photo
36 comments
 
zero
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Rita Pascual

Discussion  - 
 
parabola
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Raphael M. Machado's profile photoHatice Zor's profile photomaria elena cervantes herrera's profile photo
 
RiatPacsual Mathematicst
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Torolf Sauermann

Videos/Pictures  - 
 
mathematische Kunst Apollonian Fractal Sauermann 2015
 ·  Translate
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Torolf Sauermann's profile photoStefan “‫زردشت‬‎” Plank's profile photoARAM's profile photoHatice Zor's profile photo
 
Zoom in :)
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Ritche Regala

Math Questions  - 
 
My young son was asked to derive the surface area of a sphere using pure algebra. He could not get to the right formula but it seems that his reasoning is right. Please tell me what's wrong with his logic.

He reasons as follows:
1. Slice a sphere into thin circles (or rings if you hollow them out)
2. The sum of the circumferences of all the circles forms the surface area of the sphere.
3. SInce the formula of circumference is 2(Pi)R, the sum of the circumferences would be 2(Pi)(R1+R2+R3..Rn)
4. My son draws the radii beside each other and concludes that their sum would be equivalent to one-half of the area of the largest circle or (Pi*R^2)/2. He appears to be right from his drawing.
5. Substituting the sum of the radii, he comes up with a formula for the surface area of the sphere as R^2*Pi^2.
6. He asks me what's wrong with his procedure that he cannot derive the correct formula of 4PiR^2.
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Floppy Densetsu's profile photoDavid Jao's profile photoSatchitanand Raghoonundun (Satchit)'s profile photo
32 comments
 
If you make the shells thin enough, you can ignore the fact that the sphere is curved, and just assume that the cross section of each shell is a straight line. However, you cannot ignore the angle of this straight line, no matter how thin you make the shells.
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Isaac Calder

Videos/Pictures  - 
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Isaac Calder's profile photo
 
if anybody wants to extend the table, here is the key (going from right to left):
...249764371295716500836135134846344163506159929966088384389877319335937
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Pat Ballew

Math Questions  - 
 
http://pballew.blogspot.com/2011/02/origin-of-foil-for-binomial.html  Still searching for information about FOIL for binom multiplication.  Where was it used/not used; is it in journals or books before 1929?  HELP
Recently alerted by Dave Renfro to a discussion on the Math Forum about the first use of the acronym FOIL for the multiplication of binomials. Robert Hansen wrote , "While reviewing Shute's Elementary Algebra book I came acro...
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Pat Ballew's profile photoManuel Alzurutt's profile photo
4 comments
 
Realize I didn't say that well, Kilpatrick wanted almost no math for anyone... D E Smith wanted a purer math, H E Moore wanted more applied mix. As usual in these cases, testing companies and text book companies won, students and teachers lost.
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