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Are hashtags gone?

I can't see them anywhere.

Edit: I see that some posts (including this one) still have them, but no problems.

Note by Tim Vermeulen
2 years, 9 months ago

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Problems have tags but they're hidden, mainly because of this. But you can still search for problems tagged with a certain ....tag. For example, if you search for things tagged with #triangleinequality, you can find the problem I mentioned in the link above. Mursalin Habib · 2 years, 9 months ago

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@Mursalin Habib Oh! I missed that note (surprise, surprise). I agree that some tags gave it away. However,

  • it would be nice if the hashtags would become visible after solving the problem,
  • some hashtags (like #algebra) don't have to be hidden in the first place, and
  • how do we search for hashtags? The 'popular tags' box is gone.
Tim Vermeulen · 2 years, 9 months ago

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@Tim Vermeulen

  • Agreed!
  • Indifferent on this one [what's the use of hiding some tags and unhiding others?]
  • There's no easy way to do this. You can manually search for tags with: https://brilliant.org/newsfeed/tag-feed/insert tag here using small letters and no spaces/.
I was going to share a note on this very thing. Mursalin Habib · 2 years, 9 months ago

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@Mursalin Habib I think there is a reasonable difference between problem tags and solution tags (or technique tags). Problem tags can be determined while reading the problem (like #algebra or #gametheory), while solution tags indicate what techniques a user might use while solving the problem (so it's likely the user uses it, not necessary). In fact, I'd say users should be given the ability to tag their solutions with techniques they used.

I also thought of that solution (changing the url), but that's obviously not how we're supposed to search for tags. Staff, look into this please? Tim Vermeulen · 2 years, 9 months ago

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@Tim Vermeulen The staff are working on a search bar for searching tags and it'll be live "soon". See here. Mursalin Habib · 2 years, 9 months ago

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@Mursalin Habib Thanks :) Tim Vermeulen · 2 years, 9 months ago

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@Tim Vermeulen You're welcome! Mursalin Habib · 2 years, 9 months ago

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@Tim Vermeulen

Problem tags can be determined while reading the problem

Doesn't that mean problem tags give you no additional information other than what you already get from reading the problem? And I'm not entirely sure about what counts as a problem tag and what doesn't. What would a problem about derangements have as its problem tag? #Combinatorics or #Derangements? The statement that "solution tags indicate what techniques a user might use while solving the problem (so it's likely the user uses it, not necessary)" may be true for problems with high ratings, but that is not the case for lower level problems. Most lower level problems are a direct application of some technique or another.

That being said, I have no problem at all if "problem tags" are not hidden.

I strongly agree on the point about being able to view the tags after you solve a problem. Because sometimes when you see the tags, you find that there are different, very different approaches for a single problem. This happened to me once with a geometry problem[this was a time when the tags were visible]. Not only did I solve it without using the tags that were mentioned [with the exception of #Geometry], I had no idea how some of the tags [like #Ptolemy'sequation] were remotely helpful in solving the problem.

Finally a question: what "problem tag" would the following problem have?:

If \(z\) is a complex number such that \(|z|=1\), prove that

\[|1-z|=2\sin(\frac{\arg z}{2})\]

# Algebra? I can view this as a purely geometrical problem. Mursalin Habib · 2 years, 9 months ago

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@Mursalin Habib

Doesn't that mean problem tags give you no additional information other than what you already get from reading the problem?

Exactly.

What would a problem about derangements have as its problem tag? #Combinatorics or #Derangements?

Yeah, I guess.

Most lower level problems are a direct application of some technique or another.

Yes, but still, the technique that's used shouldn't be visible beforehand.

Finally a question: what "problem tag" would the following problem have?

Maybe both #algebra and #geometry, as it has to do with both topics.

Note that distinguishing problem tags and solution tags is just a silly idea of mine, it will probably never see the light of day (on Brilliant, at least). Tim Vermeulen · 2 years, 9 months ago

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Hey guys - we removed tags from the problem view because they sometimes gave away the technique for solving the problem, and haven't had a chance yet to make them show up after you've completed the problem. It's on our to-do list. Suyeon Khim Staff · 2 years, 9 months ago

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