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Alex Klotz

@aklotz.bsky.social
2.6K followers 2.1K following 920 posts

Physics professor at California State University, Long Beach. Interested in knots, DNA, and knotted DNA.

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Alex Klotz @aklotz.bsky.social · 18/09/2026
Professor at a primarily undergraduate institution trying to talk to his R1 colleagues at a conference.
Simpsons Good evening, sir.
Would you please leave without a fuss right now?
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Alex Klotz @aklotz.bsky.social · 14/07/2026
Paper about big double donut knots in now published, and open access! iopscience.iop.org/article/10.1...
diagram showing an arrangement of 41 concentric helices being wrapped into a torus, then two tori linked with each other.
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Alex Klotz @aklotz.bsky.social · 29/04/2026
At the International Conference on Packing Problems and you can tell the organizers have really put in a 74.05% effort putting this together.
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Alex Klotz @aklotz.bsky.social · 23/04/2026
Any of my internet friends in Amsterdam?
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Alex Klotz @aklotz.bsky.social · 31/03/2026
@weirdmedieval.bsky.social Do you do weird ancient guys?
Egyptian guy with two millipedes for a head
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Alex Klotz @aklotz.bsky.social · 29/03/2026
Guy who loses his boarding pass on the bus from the gate to the plane because he likes probing edge cases.
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Alex Klotz @aklotz.bsky.social · 24/03/2026
Spectroscopist A: *shoots self in arm with laser* Spectroscopist B: "That really doesn't reflect well on you."
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Alex Klotz @aklotz.bsky.social · 10/03/2026
Absolutely pathetic field near the equator
Measurement of 35 microtesla field
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Alex Klotz @aklotz.bsky.social · 04/03/2026
I like big knots and I cannot lie. arxiv.org/abs/2603.02416
arxiv.org
Tight Bounds for Tight Links: Ropelength of T(Q,Q) torus links
Ropelength, L, is a parameter characterizing the minimum contour length of a knot or link. There exist upper and lower bounds on ropelength with respect to crossing number, C, including a universal lo...
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Alex Klotz @aklotz.bsky.social · 24/02/2026
I'm in Australia and trying to use a command line on a cluster in Scotland. Typing is laggy because the round trip distance is more than 0.1 light seconds. This is the first time I've been hampered by the finite speed of light.
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Alex Klotz @aklotz.bsky.social · 18/02/2026
Studying nanochemistry while texting with dad.
Journal table of contents figure with thumbs up emojis.
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Alex Klotz @aklotz.bsky.social · 10/02/2026
Any aspiring cleos out there who can find an evaluation of this?
limit of a ratio of two sums, one of an integral of a radical, the other of a radical.
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Alex Klotz @aklotz.bsky.social · 04/02/2026
Guy who walks around tourist areas with a big magnet to mess up people using phone compass navigation.
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Alex Klotz @aklotz.bsky.social · 31/01/2026
ACAB includes websites that don't have a Reject Cookies button up front
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Alex Klotz @aklotz.bsky.social · 29/01/2026
Calling variables in bash reminds me I should be in a different dollar bracket.
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Alex Klotz @aklotz.bsky.social · 22/01/2026
Can't believe this bus wifi got a faculty position.
Ttbuswifi
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Alex Klotz @aklotz.bsky.social · 13/01/2026
It's funny how my "internet not working right" workflow has shifted from checking my wifi connection to checking downdetector to see if there's a global outage of from something like AWS or cloudflare.
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Alex Klotz @aklotz.bsky.social · 08/01/2026
Someone in a pub asked me how I don't get cold running in shorts and I got to give a whole thermodynamics lesson.
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Alex Klotz @aklotz.bsky.social · 06/01/2026
I woke up too early because of jetlag AMA
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Alex Klotz @aklotz.bsky.social · 03/01/2026
After hanging around kids several times in the past few weeks I can confirm that the 6-7 thing is annoying.
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Alex Klotz @aklotz.bsky.social · 02/01/2026
Environmentally and geopolitically it might be a disaster, but the Northeast passage between China and Europe could be made a lot shorter by digging a canal between Lake Baikal and the Amur River basin. Then you'd only need to sail the Arctic between the Yenisey and the White Sea-Baltic Canal.
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Alex Klotz @aklotz.bsky.social · 01/01/2026
If there's one thing I can attribute my success to, it's understanding the post hoc ergo propter hoc falacy. My career really took off after I learned about it.
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Alex Klotz @aklotz.bsky.social · 30/12/2025
Boss: "This new invention that rotates the pistons in our engine is great! What should we call it?" Jim: "A jimshaft!" Cam: "I have a better idea."
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Alex Klotz @aklotz.bsky.social · 27/12/2025
I bet Ryerson didn't count on their name change setting themselves up for "Temu U of T"
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Alex Klotz @aklotz.bsky.social · 27/12/2025
You are eating because you're hungry, I am eating because I'm bored. We are not the same.
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Alex Klotz @aklotz.bsky.social · 23/12/2025
Guy who insists that arrays begin at index 0 but that the ground floor is the 1st.
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Alex Klotz @aklotz.bsky.social · 20/12/2025
My biggest shame from high school English class is that I DNF'd Jane Eyre right before we found out about the wife in the attic.
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Alex Klotz @aklotz.bsky.social · 19/12/2025
Good news, we now have evidence that there was a two month period in which planetary-mass black holes did not collide within our solar system. journals.aps.org/prl/abstract...
journals.aps.org
Experimental Limits on Planetary Mass Primordial Black Hole Mergers
The multimode acoustic gravitational wave experiment (MAGE) is a high-frequency gravitational wave detection experiment featuring cryogenic quartz bulk acoustic wave resonators operating as sensitive ...
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Alex Klotz @aklotz.bsky.social · 17/12/2025
Solving the helium atom in quantum mechanics 🤝 Cancer prevention Understanding the importance of screening
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Alex Klotz @aklotz.bsky.social · 15/12/2025
Teaching thermodynamics but pronouncing "metastable" with the same cadence as "metastasis."
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Alex Klotz @aklotz.bsky.social · 10/12/2025
If you're ever feeling bad, know that the building that houses the MIT Department of Chemical Engineering, one of the richest departments in one of the most prestigious schools, designed by world-famous architect I.M. Pei, does not have a way to take the stairs from the second to the third floor.
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Alex Klotz @aklotz.bsky.social · 08/12/2025
Can't even reflect off nickel without my polarization changing, because of MOKE.
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Alex Klotz @aklotz.bsky.social · 07/12/2025
I wanted to take the bus but it was stationary
Lagrange bus stop in paris
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Alex Klotz @aklotz.bsky.social · 02/12/2025
If you want to know how to make knots untie or why proteins have the knots that they do, our paper was just published:https://pubs.acs.org/doi/full/10.1021/acs.macromol.5c01073
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Alex Klotz @aklotz.bsky.social · 30/11/2025
Dennis from It's Always Sunny saying he hasn't even begun to peak, but it's about my citation count.
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Alex Klotz @aklotz.bsky.social · 25/11/2025
Anakin/Padme meme about proving the solution of a differential equation exists vs finding it.
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Alex Klotz @aklotz.bsky.social · 21/11/2025
Anglo-Saxon historians, can we just agree that the world would be a funnier place if we all said that Aethelred the Unready was actually unready for his responsibilities, and not just poorly advised or whathaveyou?
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Alex Klotz @aklotz.bsky.social · 16/11/2025
Glitchless any% errormaxing Overleaf speedrun
Overleaf with four connection errors
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Alex Klotz @aklotz.bsky.social · 15/11/2025
Looked up how much the @calstate.bsky.social paid OpenAI, it's 16.9 million dollars. (Purchase order 2400029476) @cfaunited.bsky.social
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Alex Klotz @aklotz.bsky.social · 14/11/2025
Outlined shadowed gradient comic sans, you know this will be good
Title slide of a talk by renzo ricca
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Alex Klotz @aklotz.bsky.social · 13/11/2025
If you ever submit a paper to the journal Soft Matter, do not use the word "via" at all, or else the editors will italicize it and make you look like an idiot who italicizes random words in the middle of sentence for no reason.
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Alex Klotz @aklotz.bsky.social · 13/11/2025
@mscommunity.bsky.social if Windows 10 support has ended why are you still externally restarting my computer to install updates? That's the whole benefit of no more support, I get to use my computer as I like!
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Alex Klotz @aklotz.bsky.social · 08/11/2025
Told a border guard I was a physics professor and he had me tell him the equation for force before letting me back into the United Kingdom.
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Reposted by Alex Klotz
Sam Foley @samuelfoley.com · 06/11/2025
"Why do you like membrane bending simulations so much?"
Marge Simpson, holding a CG membrane simulation snapshot: "I just think they're neat!"
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Alex Klotz @aklotz.bsky.social · 30/10/2025
One of my pet peeves is the persistent belief that signatures are magical.
entering schengen you MUST sign your passport!
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Alex Klotz @aklotz.bsky.social · 22/10/2025
The prolific @johncarlosbaez.bsky.social is giving TWO different talks in Edinburgh today, and I'll have to miss both.
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Alex Klotz @aklotz.bsky.social · 20/10/2025
Come be my colleague! careers.pageuppeople.com/873/lb/en-us...
careers.pageuppeople.com
Jobs @ The Beach
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Alex Klotz @aklotz.bsky.social · 17/10/2025
Why are you, as a conference organizer, asking for a 500-800 word abstract.
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Alex Klotz @aklotz.bsky.social · 09/10/2025
Any discussion about knot theory invariable ends up with a demonstration of how to get Rob Scharein's cat on the surface of a knot in KnotPlot
knot with cat on it
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Alex Klotz @aklotz.bsky.social · 07/10/2025
Magnetic field around a knotted wire
a blue knotted curve with little red arrows around it
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