en.wikipedia.org/wiki/Mathematical_fallacy

In mathematics, certain kinds of mistaken proof are often exhibited, and sometimes collected, ... 2=1} 2=1 , but can be modified to prove that any number equals any other number. ... Many functions do not have a unique inverse. ... For instance, a naive use of integration by parts can be used to give a false proof that 0 = 1.

mathforum.org/library/drmath/view/57131.html

1 + 1 does not equal 2. What is the math equation that proves this?

www.quora.com/Can-it-be-argued-that-1+1-does-not-equal-2

Either from a mathematical or a philosophical way ... Let's define 1 as the common feature of all singleton sets. Then let's define 2 as the common feature of all sets ...

www.quora.com/When-does-one-plus-one-not-equal-two-1

what are the conditions for 1 + 1 = 2? are there conditions under which 1 + 1 ... If you are operating within the ring of integers mod two () then this sort of works.

news.rpi.edu/luwakkey/2456

Jun 6, 2008 ... “The first two conditions — exposure to a single color in each eye — did not result in a significant difference in melatonin suppression, while the ...

www.debate.org/debates/One-plus-one-does-not-always-equal-two/1

May 2, 2009 ... I affirm the resolution: "One plus one does not always equal two." To clarify, the resolution simply means that 1+1=2 does not always happen.

www.independent.co.uk/news/people/terrence-howard-thinks-1x1-2-has-a-secret-system-called-terryology-and-spends-17-hours-a-day-making-10502365.html

Sep 15, 2015 ... Actor Terrence Howard believes one times one should equal two Getty Images ... called Terryology, which will not be shared with the wider world until his ... with one of his professors over the answer to the 1x1=1 conundrum. .... Click the Adblock/Adblock Plus icon, which is to the right of your address bar.

forum.kerbalspaceprogram.com/index.php?/topic/67093-11-dosent-always-equal-2-what

I'm sorry, but every time I've counted on my fingers, 1 plus 1 equaled 2. .... it's probably safe to assume that 0/0 is undefined and that 1+1 does, in fact, equal 2. ..... 0.999... is not the next smaller neighboring number to 1, it is 1 ...