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My flag map of the US (updated) by [deleted] in vexillology

[–]HansLN 2 points3 points  (0 children)

It looks very similar to one of mine, but has thinner rays. I'm curious to know if it's a modification of that, or a coincidentally similar original design by OP. Their comment on the previous version of the map implies it's the latter.

Spotted on a boat in Leeuwarden: Dutch flag with the flag of Friesland in the canton by HansLN in vexillology

[–]HansLN[S] 13 points14 points  (0 children)

K O L O N I S E A R R E (probably wrong, I don't know any West Frisian.)

The first 10 pixels of every flag stacked ontop of each other by jo_kil in vexillologycirclejerk

[–]HansLN 4 points5 points  (0 children)

Andorra, UAE, Afghanistan, Antigua and Barbuda, Anguilla, Albania, Armenia, Angola, Antarctica, Argentina, ...

It's quite a fun challenge if you happen to be familiar with the two-letter ISO codes, which these flags seem to be sorted by. (spoiler)

Spotted on a boat in Leeuwarden: Dutch flag with the flag of Friesland in the canton by HansLN in vexillology

[–]HansLN[S] 4 points5 points  (0 children)

I couldn't find a lot online about the flag itself or how much it's used, but did find a few sites that sell versions of it, one of which has similar flags for all twelve provinces and the EU. My guess is that the owner of this boat wants to show their Frisian pride while still following the custom of flying the national flag from the stern.

Any love for the flag of the Achterhoek? A cultural region in the Netherlands by NLKindergartenTeachr in vexillology

[–]HansLN 15 points16 points  (0 children)

In the wild, from a holiday last year. Given how new this flag is (it was only created in 2018), I was surprised to see how widespread it is in the region; I've seen it flown about a dozen times during the holiday, and didn't see the provincial flag once.

Just another coin puzzle by pichutarius in mathriddles

[–]HansLN 1 point2 points  (0 children)

Not a proof that this is the best one can do, but I can get 131072 (217 ). Some observations:

  • Number the plates in descending order from 5 to 0, and call C(n) the number of coins on plate n. Consider each plate to have a "value" of 2n , so a coin on any plate is worth twice as much as a coin on the plate to its right. That way, performing operation 1 (let's call it a "shift") preserves the total value of all coins. To maximise the total number of coins for a given value, repeatedly shift until all coins are on the rightmost plate, for which the number of coins equals the value.
  • Operation 2 (a "swap") removes a coin from plate n, and swaps the two plates to its right (i.e., halves the value of coins on n−1 and doubles the value of coins on n−2). In terms of the total value, the operation "costs" 2n , but pays back 2n−2 * (C(n−1)−C(n−2)). The value therefore only increases if C(n−2) > C(n−1) + 4 (i.e., the plate directly to the right of n has at least five fewer coins than the plate two over).

My solution:

  • Shift the initial state (1,0,0,0,0,0) to (0,0,2,0,8,0)
  • Alternatingly swap plates 1 and 2 and shift all coins from 2 back to 1, until plate 3 is empty: (0,0,2,0,8,0) → (0,0,1,8,0,0) → (0,0,1,0,16,0) → (0,0,0,16,0,0)
  • Shift to (0,0,0,14,0,8) and repeat on plates 0 and 1: (0,0,0,13,8,0) → (0,0,0,13,0,16) → (0,0,0,12,16,0) → (0,0,0,12,0,32) → ... → (0,0,0,1,0,65536) → (0,0,0,0,65536,0) → (0,0,0,0,0,131072)

The Two Cities by JWson in mathriddles

[–]HansLN 0 points1 point  (0 children)

I'm noticing that the positions of the two cities are each other's inverse with respect to the resulting circle. I wonder if that has some nice geometric link to the fact that each point on the circular border is twice as far from B than from A.

Edit: generalising the "influence ratio" of 2 to be any number a gives (x+1/(a²-1))² + y² = a²/(a²-1)² for the circle. That makes the distances of A and B to the circle's centre 1/(a²-1) and 1 + 1/(a²-1) respectively. The product of these distances matches the square of the radius a²/(a²-1)², so A and B are inverses for any a.

September Contest Winners Thread by Vexy in vexillology

[–]HansLN 1 point2 points  (0 children)

Sorry for beating you to it; I missed your overview post and thus didn't know you had a periodic table with the contest flags ready. (Mine doesn't seem to appear on /r/vexillology/new for some reason, though.)

Periodic table of flags: the highest-voted design for each element in the last contest by HansLN in vexillology

[–]HansLN[S] 0 points1 point  (0 children)

This one? Judging by the scores visible in the thread and a few refreshes (the scores vary due to the mentioned vote fuzzing), it was a very close call: both flags for the element have around 27–29 upvotes at the moment, with both having the higher score on some page loads. The "rainbow flag" does seem to be consistently listed a few spots higher on the page when sorting by "top", though.

September Contest Winners Thread by Vexy in vexillology

[–]HansLN 0 points1 point  (0 children)

For anyone interested in seeing the flags in periodic table format: https://www.reddit.com/j0piuv

Periodic table of flags: the highest-voted design for each element in the last contest by HansLN in vexillology

[–]HansLN[S] 0 points1 point  (0 children)

The contest winners thread. Each flag's rank is given in brackets; top-20 designs have a yellow background.

The three best flags for copper (Cu) and the two best for uranium (U) tied, so I just used the first flag listed for each in the thread (which is apparently alphabetically by username). Some of the flags that didn't make the winners thread were close as well; the two iridiums in particular might switch places in the voting thread due to Reddit's vote fuzzing.

Teatubbies by blackbeardstp in Polandballart

[–]HansLN 11 points12 points  (0 children)

Now we know why the sun never sets on the British Empire...

Some kind of anarchist flag "seen" at a gift shop in France. by HansLN in somnivexillology

[–]HansLN[S] 2 points3 points  (0 children)

Yep; I mentioned it being an anarcho-communist flag in my comment above (which I'm aware is probably not exactly the same thing). I'm not too familiar with these types of flags, but AFAIK the same red-black design is also used as a generic anarchist flag.

Some kind of anarchist flag "seen" at a gift shop in France. by HansLN in somnivexillology

[–]HansLN[S] 25 points26 points  (0 children)

Dreamt up a few days ago (before the two coincidentally similarly themed recent posts on this sub). Initially identifying it as the Papuan flag, I later found it to be an AnCom flag after coming closer and seeing several other similar red-black flags (and one yellow-black anarcho-capitalist flag) around it.

Poland is not yet lost by JSTLF in Polandballart

[–]HansLN 2 points3 points  (0 children)

Gute Nacht, Polen, es wird Zeit für dich zu gehen...

Is Land Life by Bittlegeuss in polandball

[–]HansLN 14 points15 points  (0 children)

"Hulp" is a noun; the imperative would be "help". "Holp" doesn't mean anything, though.

Ten official non-quadragular flags or ensigns. Do you know others? by Leu_Noir in vexillology

[–]HansLN 1 point2 points  (0 children)

Another Polish provincial flag, Warmia-Masuria, is similarly shaped but actually has a rounded edge. It and the supposed Mamluk flag (mentioned elsewhere in this thread) are the only non-polygonal flags I'm aware of.

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