那么，怎么证明1+1=2呢？ 目前还无法证明，因为我们根本不知道“+”这个符号，究竟是什么意思，也不知道“2”这个符号是什么意思。 记住，我们可是一无所知的外星人。

2013年6月26日 · % is the modulo operator. It returns the remainder after dividing the left hand side by the right hand side. Since 2 divides zero times into 1, the remainder is one. In general, if a and b are positive integers, and a < b, then a % b == a. The arguments do not need to be integers, though.

2013年11月20日 · I would very much say that 1+1 = 2 is true by definition, it's a bit like the statement "the standard metre is one metre long" before the redefinition in terms of light speed. Your sceptic must understand what the symbols 1+1 means otherwise he is not justified in claiming that 1+1 is two.

2014年5月16日 · How to “prove” that 2 = 1. Let’s begin our journey into the bizarre world of apparently correct, yet obviously absurd, mathematical proofs by convincing ourselves that 1 + 1 = 1. And therefore that 2 = 1.

So, I made this video to share a very simple proof....more. I think we've all had the question (at least once) on why 1+1=2. It's like asking the definition of 'the', and it's rather...

2013年1月15日 · The main reason that it takes so long to get to $1+1=2$ is that Principia Mathematica starts from almost nothing, and works its way up in very tiny, incremental steps. The work of G. Peano shows that it's not hard to produce a useful set of axioms that can prove 1+1=2 much more easily than Whitehead and Russell do.

2022年7月12日 · Some people think that 1=2, and the math actually makes sense. But can you prove them wrong and find the flaw in their logic?

If you define $2$ to be an abbreviation for $1+1$, assuming we know what $+$ is, then $1+1=2$ is certainly a theorem, with a very short proof. However, a more refined possibility is to define the natural numbers as certain sets, and then define the plus operation by induction.

2019年9月11日 · It all depends on what you mean by 1, 2, and +. One can do something like Peano arithmetic and say that we have $0$, a $+1$ operation, and literally define $2=1+1$. This doesn't require any sort of relation to nature, and it makes the statement true regardless of …

2012年3月23日 · If you want to know why would use use 1 << 2 rather than 4 which is the same value, it because you explicitly want to be using a bit mask e.g. Shows each value is in a bit mask. Java Operators. Bitwise Operations. << is the left bit shift operator. @ChrisWhite 1 << 2 = 4, yes.