We say that a set $A\subseteq \mathbb{N}$ has lower density 0 if $$\text{lim inf}_{n\to\infty}\frac{|A\cap\{1,\ldots,n\}|}{n} = 0.$$ Given $A,B\subseteq \mathbb{N}$ we set $A\cdot B = \{a\cdot b: a\in A, b\in B\}$. The set $A^n$ for $n\in\mathbb{N}$ is defined inductively in the obvious manner. ...

What does this mean? $$\Large.\overline9 $$ I've never seen this notation before.

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If this is to be implemented, I propose that we can view the total sum of the column / row by hovering over the description label.

Today I noticed a <2K user doing mass edits to add <kbd> tags to posts. This seems like a lot of wasted effort for reviewers, but I wasn't positive there was anything wrong with it. Should anything be done about this? Edit: Now someone else is doing it. I just don't understand why they do this.

I think we should instead make the ticker feeds semi-transparent and become full opacity on hover, since when you're reading the transcript having slightly opaque tickers aren't as disturbing, and you can always just clear it if they become a problem. See live example with CSS in Stack Snippet: ...

Something sort of magic happened a short time ago, sometimes a graph is worth a thousand flags: That's right, around March 28, the spam protection layer blocked about 20,000 spam attempts, mostly in the form of suggested edits, while users didn't see much of an increase in what they had to fl...

We've experimented with this sort of thing in the past, and it hasn't been very successful for any appreciable amount of time. This is for two reasons: We have to tell users why something can't be submitted, although we can be kind of vague as to what's wrong, to avoid users 'fixing' only the s...