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Joe boosted

Given \(M, N\), matrices, let
\[m_{ij} = \lfloor \log_2 M_{ij} \rfloor \]
and similarly for \(n\). Then \(M_{ij} \approx 2^{m_{ij}}\). Define \(m \star n\) by
\[(m \star n)_{ij} = \max_k (m_{ik} + n_{kj}), \]
This gives us an approximation \((M \cdot N)_{ij}\approx 2^{(m \star n)_{ij}}\)

Has anyone here encountered this before? It's essentially floating point matrix multiplication without the mantissa bits, but I'm wondering if there are any papers or resources dealing with it.

I say "essentially", but I just mean "similar to"

Given \(M, N\), matrices, let
\[m_{ij} = \lfloor \log_2 M_{ij} \rfloor \]
and similarly for \(n\). Then \(M_{ij} \approx 2^{m_{ij}}\). Define \(m \star n\) by
\[(m \star n)_{ij} = \max_k (m_{ik} + n_{kj}), \]
This gives us an approximation \((M \cdot N)_{ij}\approx 2^{(m \star n)_{ij}}\)

Has anyone here encountered this before? It's essentially floating point matrix multiplication without the mantissa bits, but I'm wondering if there are any papers or resources dealing with it.

4 years of commuting in and out of university, and *now* the bus gets working air conditioning

Joe boosted

‪after 4.69 years of uptime and over 16 years of continuous service our very last 64 bit DEC Alpha retired itself early this morning. @netbsd #bsd #rip #thankyou #goodbye

Joe boosted

“Sorry, your browser isn’t supported. Trying using a browser from the company that is eating the internet.”

Mmmmmm try fucking off.

Apparently , instead of deleting files like I asked it to, has been moving everything to ~/.local/share/Trash/files. Ugh, I moved to and to get away from this shite.

Why do I have so many mini-usb cables and barely any micro? I can't even remember the last device I bought that required mini-usb

Joe boosted

The #gameoftrees FAQ summarizes our responses to several questions the internet was asking when the project first became known to the general public: gameoftrees.org/faq.html

Joe boosted

I friggin' love this educational video.

It's a -era film explaining . I listen to it over and over to practice my Russian. Repetition and a familiar subject help a lot.

youtube.com/watch?v=IsuwQsDYJr

Also, it's out of copyright. Soviet films belong to the people, comrade.

Joe boosted

#Ghidra might be one of the coolest things I've played with lately, kind of bizarre seeing it running on #OpenBSD. The decompiler tool is.. something else. Also, notice RETGUARD prologue/epilogue?

On -current:
$ pkg_add ghidra
$ ghidraRun

Running NSA reverse engineering tool on the Huawei matebook, of course. 😏

Why did I tidy? Now I can't find the tip of my soldering iron.

I have no recollection whatsoever of the last 6 pages I read.

Joe boosted

Looking for undeadly.org staff contact :)

I digged up 13 #OpenBSD developer interviews in manageable format that we did for the 20th project anniversary.

It would be great if undeadly.org was willing to re-publish them (currently there is only undeadly.org/cgi?action=articl pointing at dead links)

Joe boosted

Not a fan of these, but this one certainly has it's charm:

Minimal solution:

🍎=154476802108746166441951315019919837485664325669565431700026634898253202035277999,

🍍=36875131794129999827197811565225474825492979968971970996283137471637224634055579,

🍌=4373612677928697257861252602371390152816537558161613618621437993378423467772036

Not a fan of these, but this one certainly has it's charm:

Joe boosted

I finally got my Minecraft account back after months, and all I am thinking is

DRM is bullshit and we should all just be investing in Minetest instead 😕

Joe boosted
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A Mastodon instance for maths people. The kind of people who make \(\pi z^2 \times a\) jokes. Use \( and \) for inline LaTeX, and \[ and \] for display mode.