Intereting Posts

What is the maximum overshoot of interpolating splines in $d$ dimensions?
gcd of $(2^{2^m} + 1 , 2^{2^n}+1) = 1$ for distinct pair of positive integers $n,m$
Summation Theorem how to get formula for exponent greater than 3
A fair coin is tossed $n$ times by two people. What is the probability that they get same number of heads?
find the inverse Laplace transform of complex function
Accurate identities related to $\sum\limits_{n=0}^{\infty}\frac{(2n)!}{(n!)^3}x^n$ and $\sum\limits_{n=0}^{\infty}\frac{(2n)!}{(n!)^4}x^n$
Question about a basis for a topology vs the topology generated by a basis?
What is the difference between a variety and a manifold?
abel summable implies convergence
Probability that n points on a circle are in one semicircle
Dedekind finite union of Dedekind finite sets is Dedekind finite
Is the square root of a negative number defined?
Why can a quadratic equation have only 2 roots?
Prove the image of separable space under continuous function is separable.
Why exactly can you take the absolute value of one side of this inequality and assume it is still true?

I was reading http://www.purplemath.com/modules/orderops2.htm it shows

```
= 16 ÷ 2[2] + 1 (**)
...
= 5
```

The general consensus among math

people is that “multiplication by

juxtaposition” (that is, multiplying

by just putting things next to each

other, rather than using the “×” sign)

indicates that the juxtaposed values

must be multiplied together before

processing other operations

However when talking to certain people they all have said there is no such thing as this. There is shorthand which uses normal multiplication order and no “multiplication by juxtaposition” and etc.

- For each $x,y,z∈\mathbb N$, if $x<y$ then $x+z<y+z$
- Is the difference of two irrationals which are each contained under a single square root irrational?
- How addition and multiplication works
- subtraction of two irrational numbers to get a rational
- Formal proof for $(-1) \times (-1) = 1$
- The last digit of $n^5-n$

Is there a “general consensus among math people” or is this simply incorrect?

- Blackboard bold, Bold, Fraktur, and Reserved Variable.
- Is there a difference between $y(x)$ and $f(x)$
- Proper notation for distinct sets
- Can anyone explain why $a^{b^c} = a^{(b^c)} \neq (a^b)^c = a^{(bc)}$
- What are some examples of notation that really improved mathematics?
- How do you pronounce the symbol $'$ in $f'$?
- Square root of 1
- Column or row of a matrix?
- Understanding the differential $dx$ when doing $u$-substitution
- which is larger number? $\sqrt{7}-\sqrt{6}$ or $\sqrt{6}-\sqrt{5}$

So, the question is whether $a/bc$ means $(a/b)c$ or $a/(bc)$. And the answer is, DON’T WRITE $a/bc$, because it will only cause confusion. Some people/software/whatever will make one interpretation, some will make the other, neither one has been endorsed by the Dalai Lama or any other great leader. Put in enough parentheses to make your writing foolproof.

It’s simply incorrect. If it were correct, then $2x^2$ would really mean $(2 \times x)^2 = 2^2 \times x^2 = 4 \times x^2$, but it doesn’t; it means $2 \times x^2$.

This question is more about how we deal with trolling and nuisances.

Read this page: http://knowyourmeme.com/memes/48293

Then maybe we can start a meta article about identifying and dealing with these threads.

Between the math forums that I moderate and otherwise frequent, and dozens of other forums

(a short list is here: http://www.mymathforum.com/viewtopic.php?f=13&t=20148&p=79150#p79150),

I’d guess that thousands of hours have been wasted on this garbage.

$a/bc$, which is $a/b*c$ of course means $(a/b)*c$, and that is for the same reason $a-b-c$ means $(a-b)-c$ and not $a-(b-c)$. The reason being that mathematical expressions are meant to be read from left to right when there is no operator which takes precedence.

- Let $A$ and $B$ be $n \times n$ real matrices such that $AB=BA=0$ and $A+B$ is invertible
- Show that the Lie algebra generated by x, y with relations $ad(x)^2(y) = ad(y)^5(x) = 0$ is infinite dimensional and construct a basis
- Proofing a Reachable Node Algorithm for Graphs
- What will be the value of the following determinant without expanding it?
- Gradient of vector field in spherical coordinates
- Calculating $\lim_{x\to0} \left\lfloor\frac{x^2}{\sin x \tan x}\right\rfloor$
- The identity morphism in $\mathbf{Set}$ is the identity function
- Maximum of $x^3+y^3+z^3$ with $x+y+z=3$
- opposite of disjoint
- Nonsingular projective variety of degree $d$
- Arrangement of integers in a row such that the sum of every two adjacent numbers is a perfect square.
- Prove that $f=x^4-4x^2+16\in\mathbb{Q}$ is irreducible
- Determine the number of irreducible monic polynomials of degree 3 in $\mathbb F_p$
- a spider has 1 sock and 1 shoe for each leg. then find out the the total possibilities.
- Exists norms such that $\|x\|=\ell$ but $|x_k|>\ell$ for some $k=\{1,\ldots,n\}$?