Emperor Bokassa
07.03.2026 14:03
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Emperor Bokassa
The competition is incredibly fierce
Dad vows to continue fight over moustache.
I am not even going to attempt to add context to this headline. The tache doesn’t deserve it.
Vows never to return KLAXON, with supplementary “There’s probably more to this than they’re letting on” buzzer.
Announcing the Seventh Biennial
Dr. Henry Armitage Memorial Scholarship Symposium
of New Weird Fiction and Lovecraft-Related Research
NecronomiCon Providence convention in Providence, RI
13-16 August, 2026
necronomicon-providence.com/the-armitage...
New on my blog:
"Memories: doing my PhD at Stanford, under John L Hennessy"
lawrencecpaulson.github.io/2026/02/13/J...
Workflow Net Fitness Measures
M Manke
Workflow nets are a specialization of Petri nets, for modelling business processes. It defines measures for the fitness of these nets, namely trace fitness and causal footprint fitness. These measure how well a model covers all the traces in an event log.
Arbitrage Opportunities Correspond to Probability Inequality Identities
M Doty
For a gambling market over boolean propositions, we show a correspondence between feasibility of trading strategies, validity of probability inequalities and solutions to MaxSAT problems.
www.isa-afp.org/entries/Arbi...
Concentrated Liquidity Market Making Operations
M Echenim
Automated Market Makers are key to decentralized finance. They let users exchange tokens without needing order books. We formalize related notions and operations on pools, with an optimality result.
www.isa-afp.org/entries/Conc...
A Bridge between CSP Processes and Functional Automata
B Ballenghien B Wolff
In HOL-CSP, defines Proc-Omata from functional automata, in four variants: whether deterministic/terminating or not. We do the Dining Philosophers for any number finite of diners.
www.isa-afp.org/entries/HOL-...
Parameterized Termination for Sequential Composition and Synchronization Product
B Ballenghien
Building on HOL-CSP we introduce versions of these operators that with parameterized termination. We establish algebraic and operational laws, and fundamental properties.
www.isa-afp.org/entries/HOL-...
'Sets' Revisited: Working with a Large Category in Isabelle/HOL
EW Stark
We formalise the category of sets and functions and prove standard properties. Key is an axiom that allows us to obtain objects internal to the category corresponding to externally given sets.
www.isa-afp.org/entries/Sets...
The Impossibility of Strategyproof Rank Aggregation
M Eberl, P Lederer
In Social Choice Theory, a social welfare function (SWF) maps a collection of individual preferences to an aggregated preference relation. This entry contains two impossibility results for SWFs.
www.isa-afp.org/entries/SWF_...
Local newspaper ad board: MOULDY ROLLS RUINED FAMILY BBQ.
A modern-day tragedy, BUT YOU CAN HELP.
1 Like = 1 Pray
1 Share = 10,000 Prays
Linear orders as rankings
M Eberl
Formalises the isomorphism between finite linear orders and lists, where the list is interpreted as a ranking: it lists the elements in strictly descending order. It also provides an algorithm to compute topological sortings.
www.isa-afp.org/entries/Rank...
Swap Distance
M Eberl
The swap distance between 2 lists is the minimum # of swaps of adjacent elements needed to make the two lists the same. An O(n log n) algorithm for it is given via the connection to the number of inversions of a list, already available in the AFP
www.isa-afp.org/entries/Swap...
I’d heard that biofuels were barely a net positive at all, and were cooked up mainly to please American farmers.
PV solar panels produce about 20x more usable energy per hectare of land than growing biofuels ourworldindata.org/biofuel-land...
New in the AFP:
Abel's Limit Theorem
Kangfeng Ye
This mechanises Abel's limit theorem on power series with real coefficients. An application of this theorem extends the generalised binomial theorem for a specific example from (-1,1) to its boundary cases –1 and 1.
www.isa-afp.org/entries/Abel...
NOW - Musk: "My prediction is there'll be more robots than people... everyone on Earth is going to have one and going to want one... who wouldn't want a robot to... watch over your kids, take care of your pets... we are in the most interesting time in history." 4:08 PM Jan 22, 2026 223.8K Views
Isn't this a telling aspiration? To want robots to look after your kids, so you can do stuff, rather than robots to do stuff, so you can spend time with your kids?
The darkness inside these shrivelled men must be like a gaping unfillable void.
@gilesyb.bsky.social this is what the inflection point looks like - chinas emissions will be tanking very soon e360.yale.edu/digest/china...
Compressed Oracles
D Unruh
We formalize the compressed quantum random oracle methodology by Zhandry (Crypto 2019). This is a formalism for modeling quantum random oracles to make quantum cryptographic proofs feasible. See Unruh (arXiv 2021).
www.isa-afp.org/entries/Comp...
Nice to see it in real life
New on my blog:
Broken proofs and broken provers
lawrencecpaulson.github.io/2026/01/15/B...
