27yo anti floating point developer. You can almost always find me at http://twitch.tv/eduardorfs, it's the boring side of tech.https://bsky.app/profile/eduardorfs.comhttps://bsky.app/profile/eduardorfs.com/post/3muhtiulanc2xI'm happy with this, it seems like my take on self types naturally converge to some of the work on displayed categories. I MAY HAVE CATEGORIAL SEMANTICS FOR DEPENDENT TYPES.01 Sep 2026 16:25 +0000at://did:plc:qipr3ev2t6xchflpkgzlzedj/app.bsky.feed.post/3muhtiulanc2xhttps://bsky.app/profile/eduardorfs.com/post/3mrj5pfv3gc2oIt's been a while, just sharing more victories, I was succeful in coming with up a presentation of self types that has(conjectured) decidable type checking and only Pi Types + Self Types. This is a blog post on it, it gives some nice examples, HITs and CPS of sigma. https://gist.github.com/EduardoRFS/2678516b536fadd44f8c4836b1007bfe26 Jul 2026 00:45 +0000at://did:plc:qipr3ev2t6xchflpkgzlzedj/app.bsky.feed.post/3mrj5pfv3gc2ohttps://bsky.app/profile/eduardorfs.com/post/3mbrfbsedps2ySeriously, X is just not a great place, but this one feels too artificial, I'm kind of depressed with the state of affairs in general.06 Jan 2026 16:38 +0000at://did:plc:qipr3ev2t6xchflpkgzlzedj/app.bsky.feed.post/3mbrfbsedps2yhttps://bsky.app/profile/eduardorfs.com/post/3m5xkxtdtsc2pI think I forgot to share this here, deriving induction for the inductive types in an impredicative setting, using pairs and equality without UIP only. I'm currently working on deriving all the indexed inductive types and a fully predicative setting. https://gist.github.com/EduardoRFS/8ba5eebda8ae9d52f98801e7f6d925ee19 Nov 2025 05:55 +0000at://did:plc:qipr3ev2t6xchflpkgzlzedj/app.bsky.feed.post/3m5xkxtdtsc2phttps://bsky.app/profile/eduardorfs.com/post/3m262fahmdk27It's interesting that naive mutable variables work for interpreting the lambda calculus if you're restricting the evaluation order. The following, should not have any reentrancy problem and be reasonably fast for some classes of programs. https://gist.github.com/EduardoRFS/605816f58b4b4ea05938bbcf462701bb01 Oct 2025 22:06 +0000at://did:plc:qipr3ev2t6xchflpkgzlzedj/app.bsky.feed.post/3m262fahmdk27https://bsky.app/profile/eduardorfs.com/post/3lzbzr5xhtc2sMy technique for mutual recursion works but it currently breaks subject reduction, I need to clean the meta theory a bit.20 Sep 2025 18:41 +0000at://did:plc:qipr3ev2t6xchflpkgzlzedj/app.bsky.feed.post/3lzbzr5xhtc2shttps://bsky.app/profile/eduardorfs.com/post/3lz243zcno22rHey, I'm open to giving talks(maybe lectures?) about whatever, either in South America, Europe or North America. If you know something that I should apply for let me know.17 Sep 2025 15:01 +0000at://did:plc:qipr3ev2t6xchflpkgzlzedj/app.bsky.feed.post/3lz243zcno22rhttps://bsky.app/profile/eduardorfs.com/post/3lyln2kikpk2dSimilarly but simpler than distilling optimality, you can distill Weak CBV from a Strong CBV interpreter + explicit laziness. In such a scenario, you can see that beta + force is equivalent to a single beta in the weak setting.11 Sep 2025 20:55 +0000at://did:plc:qipr3ev2t6xchflpkgzlzedj/app.bsky.feed.post/3lyln2kikpk2dhttps://bsky.app/profile/eduardorfs.com/post/3lyftwu6pok2kI've been on TRT now, aiming to stay a bit on the high end but still under 1000. Also monitoring my DHT because I don't want to start balding again.09 Sep 2025 13:42 +0000at://did:plc:qipr3ev2t6xchflpkgzlzedj/app.bsky.feed.post/3lyftwu6pok2khttps://bsky.app/profile/eduardorfs.com/post/3ly76z73mes2vI'm at the point of my life where, I understood that if I keep myself health by doing most things right, I can take performance enhancing substances and still be healthy. [contains quote post or other embedded content]06 Sep 2025 22:12 +0000at://did:plc:qipr3ev2t6xchflpkgzlzedj/app.bsky.feed.post/3ly76z73mes2vhttps://bsky.app/profile/eduardorfs.com/post/3ly76vtahu22vTried anastrozole + clomid, the estradiol didn't lower that much, but I definitely felt the brain damage from low estradiol in the brain. Thinking on getting HCG with my doctor, but maybe I should just bite the bullet and inject T.06 Sep 2025 22:10 +0000at://did:plc:qipr3ev2t6xchflpkgzlzedj/app.bsky.feed.post/3ly76vtahu22vhttps://bsky.app/profile/eduardorfs.com/post/3ly6x6plx2c2eI'm thinking on tools to reason about optimizations and as always, code is king. This is a nice way of thinking about it.06 Sep 2025 19:51 +0000at://did:plc:qipr3ev2t6xchflpkgzlzedj/app.bsky.feed.post/3ly6x6plx2c2ehttps://bsky.app/profile/eduardorfs.com/post/3lxxaet4tc22yRelated to this, I also don't think you should need to justify yourself on why you want to do something with your body. It doesn't matter if it is for psychological, psychiatric reasons or performance enhancing, doctors should be allowed to help and warn you. [contains quote post or other embedded content]03 Sep 2025 18:15 +0000at://did:plc:qipr3ev2t6xchflpkgzlzedj/app.bsky.feed.post/3lxxaet4tc22yhttps://bsky.app/profile/eduardorfs.com/post/3lxxaayjr7c2yPeople joke that TRT is gender affirming care for cis men, but I actually think it is true to some people. Half of the reason why I consider something like this is to look more masculine. [contains quote post or other embedded content]03 Sep 2025 18:12 +0000at://did:plc:qipr3ev2t6xchflpkgzlzedj/app.bsky.feed.post/3lxxaayjr7c2yhttps://bsky.app/profile/eduardorfs.com/post/3lxxa4symxs2yThinking on getting double jaw surgery.03 Sep 2025 18:10 +0000at://did:plc:qipr3ev2t6xchflpkgzlzedj/app.bsky.feed.post/3lxxa4symxs2yhttps://bsky.app/profile/eduardorfs.com/post/3lxx5b6wt6s2cStatus Report 5: Very WIP, my understanding of induction / dependent elimination is starting to lead to novel result. The following allows you to derive induction, this is the first result that I have that when done correctly doesn't necessarily implies an irrelevant equality.03 Sep 2025 17:19 +0000at://did:plc:qipr3ev2t6xchflpkgzlzedj/app.bsky.feed.post/3lxx5b6wt6s2chttps://bsky.app/profile/eduardorfs.com/post/3lxx4zytsy22cStatus Report 4: I finally figured out how to properly implement univalence, the nice thing is that when combined with self types, you get all of HoTT. Yes, I'm aiming quite a bit high here, but the pieces are slowly fitting together. The proofs are underway, maybe I can do ICFP 2027.03 Sep 2025 17:15 +0000at://did:plc:qipr3ev2t6xchflpkgzlzedj/app.bsky.feed.post/3lxx4zytsy22chttps://bsky.app/profile/eduardorfs.com/post/3lxx4unt6xc2cYou should probably not use it as an interpreter or compiler, maybe for a theorem prover, but my tip, understanding why this works gives a new set of tools for sharing(think fast compilers). Mostly, the underlying calculus has two levels of sharing, a graph based one and an environment based one. [contains quote post or other embedded content]03 Sep 2025 17:12 +0000at://did:plc:qipr3ev2t6xchflpkgzlzedj/app.bsky.feed.post/3lxx4unt6xc2chttps://bsky.app/profile/eduardorfs.com/post/3lxx4oa5hps2dStatus Report 3: I recorded a video about using high-level languages to reason about performance. I didn't like the approach, I was reading a screenplay and it felt weird, but the content is quite useful. https://www.youtube.com/watch?v=pxTrWAThvc0 https://www.youtube.com/watch?v=pxTrWAThvc0&t=1876s03 Sep 2025 17:08 +0000at://did:plc:qipr3ev2t6xchflpkgzlzedj/app.bsky.feed.post/3lxx4oa5hps2dhttps://bsky.app/profile/eduardorfs.com/post/3lxx4iozcuc2dStatus Report 2: I was able to derive a new family of techniques for optimal reduction. Mostly splitting sharing from renaming by context capturing substitutions. There is an NbE implementation and an abstract machine is underway, but will take some time. https://gist.github.com/EduardoRFS/fab84dbe865cfdfe412f4fd27b55883b03 Sep 2025 17:05 +0000at://did:plc:qipr3ev2t6xchflpkgzlzedj/app.bsky.feed.post/3lxx4iozcuc2dhttps://bsky.app/profile/eduardorfs.com/post/3lxx4cqhup22dStatus Report 1: In the last months I finished the development of my dependent type theory with self types, it should have decidable checking and subject reduction. The strong normalization proofs are still underway, but I'm aiming to prove it for all PTS. https://gist.github.com/EduardoRFS/1fc25bd5a03eb51d72ac8eb23e535c4203 Sep 2025 17:02 +0000at://did:plc:qipr3ev2t6xchflpkgzlzedj/app.bsky.feed.post/3lxx4cqhup22d