https://groups.google.com/d/forum/sci.mathsci.mathMathematical discussions and pursuits.Google GroupsGeorge Cornelius2016-10-20T18:23:06Zhttps://groups.google.com/d/topic/sci.math/mmIQDmKeIxcTrolls among us[Next is not my ascii art. Thanks to R A for retrieving it from a well-known site.] +-------------------+ .:\:\:/:/:. | PLEASE DO NOT | :.:\:\:/:/:.: | FEED THE TROLLS | :=.' - - '.=: |Jürgen R.2016-10-20T13:48:41Zhttps://groups.google.com/d/topic/sci.math/2ehFesir80sHistorical ProblemThe following was once an outstanding open problem in Geometry, proposed by Gauss and solved more than 50 years later by Dehn. Define area and volume as follows: 1. A rectangle with side lengths 1 and h units is called a "normal" rectangle and has area h square units. Analogously a rightSteveGG2016-10-20T13:02:16Zhttps://groups.google.com/d/topic/sci.math/jd6yxQJLImoDon & VladMatch made in HeaXXX, Hell.WM2016-10-20T05:58:48Zhttps://groups.google.com/d/topic/sci.math/3HN--teY95kTwo simple proofsThe Binary Tree has a countable set of nodes. Each node increases the number of distinct paths by exactly 1 (see sheet 69 of https://www.hs-augsburg.de/~mueckenh/Transfinity/GU12.PPT). Therefore the number of distinct paths is not larger than the number of nodes. Every diagonal number, as farArchimedes Plutonium2016-10-19T22:08:00Zhttps://groups.google.com/d/topic/sci.math/du_V7mEJ1WQHistoric day in Math history-- discovery of Subtraction-Calculus dy-dx and the completion of calculusyes, completely solved Calculus subtraction Re: TALK,,, CALCULUS On Wednesday, October 19, 2016 at 1:40:02 AM UTC-5, Archimedes Plutonium wrote: Let me draw on graph paper a set of triangles that are right triangles in a cascade of 1by5, 2by5, 3by5, 4by5,5by5 and draw them in numbers respectivArchimedes Plutonium2016-10-19T20:29:16Zhttps://groups.google.com/d/topic/sci.math/nyc39IgHg5w--UC-Riverside math dept. failures of trig// Stonethrowing theory, central theory of anthropology page18UC-Riverside math dept. failures of trig sin(2)=0 with sin(3.14..)=0; where not one single professor of math at UC sees what this student sees-- Sine is a semicircle wave stalker and failures of trigonometry at UC Riverside Math Dept believe sin(2)=0 with sin(3.14..)=0 Mark Alber, **JohnThe Starmaker2016-10-19T17:40:56Zhttps://groups.google.com/d/topic/sci.math/BEU4uBK6ua8Re: Two Trillion Galaxies,http://www.nytimes.com/2016/10/18/science/two-trillion-galaxies-at-the-very-least.html?_r=0 > > > > > > How long do you think it will take for 'these people' to change the age > > > of the universe to a trillion years???? > > > > > > first 'they' have to learn how to say the word...trillion.Peter Percival2016-10-19T15:51:39Zhttps://groups.google.com/d/topic/sci.math/BWabwITZUJoHow big an ordinal is there in R?Let alpha be an ordinal and f : alpha -> R an order preserving map. How big may alpha be? -- Do, as a concession to my poor wits, Lord Darlington, just explain to me what you really mean. I think I had better not, Duchess. Nowadays to be intelligible is to be found out. -- Oscar Wilde, Ladytoyanc2016-10-19T13:30:06Zhttps://groups.google.com/d/topic/sci.math/OS9FLr4f-Ew(x1-a )/ (y1-b)Can u solve math problem? (x1-a)/ (y1-b)=tan(alpha+beta1) (x2-a)/ (y2-b)=tan(alpha+beta2) (x3-a)/ (y3-b)=tan(alpha+beta3) system of equations a,b,alpha unknown Rest is known Find unknowns Thanksbassam king karzeddin2016-10-19T13:30:06Zhttps://groups.google.com/d/topic/sci.math/TvkdwEgOhFUCan you list how many times?Can you list how many times that this statement is absolutely a true statement? The statement: (2^n =/= 111…111), (in binary number system, where (n) represents the positive integer number of repeated digits of one), and Assuming you are given a second for each time you sayWM2016-10-19T07:48:17Zhttps://groups.google.com/d/topic/sci.math/vCf7qeYZtqgThe shortest proof of finished infinityThe sequence of all finite initial segments (1, 2, ..., n) of |N is inclusion-monotonic. If there are aleph_0 elements n of |N, then there is a finite initial segment of |N with aleph_0 elements: an infinite finite initial segment. That's to the taste of all matheologians: Finished infinity!John Gabriel2016-10-19T01:40:26Zhttps://groups.google.com/d/topic/sci.math/BJVa6Dl7qWAStudents: Only one way forward and that is the new calculus.I will answer any question on the New Calculus here: https://sites.google.com/site/thenewcalculus/questions-and-answers The new calculus handles inflection points correctly and has well-defined tangent lines that unlike the bogus calculus, never cross a curve or cross it at every point! TheDan Christensen2016-10-18T22:54:15Zhttps://groups.google.com/d/topic/sci.math/EDgigVw4m2kTaking the pledge not to Feed the TrollHoping to set an example, I pledge henceforth to not feed the Troll, to not engage the Troll in anyway. I hope others will follow my example. Yes, I am sure the Troll will initially be pleased and even go on a rampage for several days to goad us, but be strong my friends! DanPentcho Valev2016-10-18T19:51:28Zhttps://groups.google.com/d/topic/sci.math/JIFobdkb0-oEinstein Teaches the Oligophrenic Worldhttp://www.bartleby.com/173/7.html Albert Einstein: "Now let us suppose that our railway carriage is again travelling along the railway lines with the velocity v, and that its direction is the same as that of the ray of light, but its velocity of course much less. Let us inquire about theJohn Gabriel2016-10-18T13:50:02Zhttps://groups.google.com/d/topic/sci.math/h0yH6d9Tfa8Jack Huizenga says his opinions haven't changed. - PART 4"There has been a rigorous treatment of calculus using infinitesimals" - Jack Huizenga. This is just simply absurd. Huizenga is referring to the abortion of non-standard analysis (Robinson). Robinson was a crank because there is no such thing as an infinitesimal. It's a myth because any concept