[syndicated profile] reddit_haskell_feed

Posted by /u/Habito-Recruitment

Software Engineer

Habito

We’re looking for an enthusiastic full time Software Engineer to join our full stack team at

Habito. We champion principled pragmatism, marrying practical solutions with high

standards. We believe in the power of collaborative learning and iterative delivery, ensuring

that every team member grows and every project shines. Here, you’ll wear many hats-

from dev, to security, to design-giving you a holistic view of our tech landscape. We

equally value the integrity of data and the elegance of code, empowering our solutions to

be as robust as they are innovative. Join us to shape technology with creativity and

precision!

About the team

The team you’d be joining is made up of 4 highly skilled, enthusiastic, full stack developers

with a wealth of experience. You’ll be working with and learning from them closely every

day! We strive to continually improve our approaches and processes, and you’ll be

encouraged to identify areas that slow us down and proactively solve them. We believe in

inclusivity, with all members of the team, no matter the level or experience, contributing

ideas and knowledge.

The Tech

  • Haskell for our backend.
  • PostgreSQL for data persistence.
  • Docker and Kubernetes hosted in AWS for our infrastructure.
  • React and TypeScript for our front end.
  • Bazel & BuildKite for our builds and automated deployments.
  • Nix for provisioning tooling and Terraform for managing our infrastructure.
  • GitHub for our code repository.
  • Event sourcing.

More about what you’ll do:

You’ll be contributing to making the UK mortgage brokering market a better place! This

means building and maintaining our website and internal facing systems. It also involves a

lot of critical work integrating lenders, insurers, conveyancers, and other players in the

space as we seek to introduce robust automation and streamline the whole process. You’ll

work in a multi-functional team, taking on business critical projects as well as the day-to-

day work keeping the lights on.

You’ll need:

  • Multiple years of commercial experience writing and deploying Haskell in a production backend.
  • Multiple years working with relational databases using SQL, ideally Postgres.
  • Experience working on a React/Typescript frontend.
  • Experience with at least one cloud infrastructure provider, ideally AWS.
  • To have worked on or want to learn to work on distributed systems.
  • To take the initiative to turn business requirements into working software.
  • To have a pragmatic mindset – perfect is the enemy of good!
  • To not be afraid to ask questions or jump on a call to unblock yourself.
  • To be happy working in a remote first role.

The benefits:

  • Salary - £50,000-£85,000
  • Discretionary bonus (company performance dependent)
  • Remote-first working
  • Flexible holiday - 25 days holiday and more if you need it! (this is team dependent)
  • Enhanced maternity & paternity leave - for when you plan to start a family
  • Life assurance - 4 x your annual salary
  • Career progression - we help you build your career
  • Contributory pension scheme - We have an ethical pension fund, but you can decide
  • where you put your money
  • International remote working for up to 20 days a year
  • Volunteering - 2 days paid volunteering each year for charity of your choice
  • Sick pay - up to 5 days sick covered each year
  • Casual dress
  • GAYE - Give As You Earn - donate to a charity of your choice via payroll.

More about Habito

Obtaining a mortgage shouldn’t be stressful. That’s why we built Habito.

We use breakthrough technology and top tier experts to deliver the most personalised, fast

and convenient way to get a mortgage today. All for free.

We don’t stop at mortgages, either. Together we’re building whole new ways of buying and

owning your home. At Habito, you’ll be a vital part of that future.

TO APPLY: PLEASE EMAIL YOUR CV to [People@Habito.com](mailto:People@Habito.com)

submitted by /u/Habito-Recruitment
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Research Fellow

Feb. 5th, 2026 09:51 am
[syndicated profile] jobsacuk_math_feed
University of Birmingham - College of Engineering and Physical Sciences - School of Physics and Astronomy<br />Salary: £36,636 to £46,049
[syndicated profile] mathoverflow_rg_feed

Posted by 35T41

Let $(M,g)$ be an $n$-dimensional Riemannian manifold.

  • For a $k$-dimensional submanifold $\Sigma\subseteq M$, say that it is minimal if it is a critical point of the $k$-dimensional area functional in $M$; equivalently, if its mean curvature vector is identically $0$.

  • For a $k$-dimensional submanifold with boundary $\Sigma_0 \subseteq M$ and an open set $U_0\subseteq M$ containing $\Sigma_0$, say that $\Sigma_0$ is area-minimizing in $U_0$ if it has the least $k$-dimensional area among every $\Sigma_0'\subseteq U_0$ with $\partial \Sigma_0'=\partial\Sigma_0$.

It is known that if $\Sigma$ is a minimal submanifold in $M$, then it is locally area-minimizing in the following sense: for every $p_0\in\Sigma$ there exists a neighborhood $U_0$ of $p_0$ in $M$ such that $\Sigma_0 = \Sigma \cap U_0$ is area-minimizing in $U_0$. This was asked on this site in 2017; the best reference I know is Theorem 2.1 in a paper by Lawlor and Morgan.

I am interested to know if the last statement remains true if we replace "area-minimizing in $U_0$" with "area-minimizing in $M$". It seems intuitive that when $\Sigma_0$ is sufficiently small, one cannot get decrease the area of a filling by letting it escape the neighborhood $U_0$.

vak: (Знайка)
[personal profile] vak
Один крутой чувак взял процессор 8088 и стал гонять его потактово, на каждом шаге считывая состояние. Для каждой машинной команды нагенерил десять тысяч вёдер вариантов. В сумме получилось 300700 тестов для всей системы команд i86. Каждый тест выглядит так:
==== Test #0 (671 bytes) ====
Name: "add byte [ss:bp+di-64h], cl"
Initial CPU State:
Registers:
ax = 52A1 (21153)
bx = E724 (59172)
cx = 81C8 (33224)
dx = F0F7 (61687)
cs = 31ED (12781)
ss = 1D03 (7427)
ds = 0258 (600)
es = CCC3 (52419)
sp = BF76 (49014)
bp = 2608 (9736)
si = CB21 (52001)
di = 2729 (10025)
ip = 02B6 (694)
flags = F452 (62546)
RAM entries: 5
32186 = 00 (0)
32187 = 4B (75)
32188 = 9C (156)
32189 = 90 (144)
21CFD = 14 (20)
Final CPU State:
Registers:
ip = 02B9 (697)
flags = F482 (62594)
RAM entries: 1
21CFD = DC (220)
Попробовал я эти тесты на моём новом симуляторе PC i86, и тут же наткнулся на ошибки в реализации процессора. Ценнейший инструмент получается. Поглядим, что выйдет от всех трёхсот тысяч тестов. Как говорится, тестов много не бывает.
chaource: (Default)
[personal profile] chaource
https://www.wionews.com/world/epstein-files-robert-maxwell-mossad-allegations-1770127431656
https://aetherczar.substack.com/p/tinker-tailor-publisher-spy-how-robert

Утверждается, что систему peer review создалъ Робертъ Максвеллъ въ корыстныхъ цѣляхъ. Онъ, молъ, основалъ издательство научныхъ журналовъ Pergamon Press, которое потомъ стало Elsevier. Если раньше ученые внимательно читали статьи, то сегодняшнiе рецензенты просто якобы служатъ златому тѣльцу. Я считаю, это не просто преувеличенiе, а ошибочное приписыванiе причинныхъ связей. Если какимъ-то образомъ ликвидировать издательство Elsevier, проблемы сегодняшней академической науки никуда не исчезнутъ.

Вотъ мой взглядъ на эти вещи:
Read more... )

Research and Innovation Associate

Feb. 4th, 2026 04:05 pm
[syndicated profile] jobsacuk_math_feed
Nottingham Trent University - Psychology - School of Social Sciences<br />Salary: £28,608 to £32,089 p.a. pro rata / Grade F
[syndicated profile] jobsacuk_math_feed
University of Oxford - Life and Mind Building<br />Salary: £39,424 to £47,779 per annum, inclusive of a pensionable Oxford University Weighting: Researcher Grade 7

Postdoctoral Researcher in Human-AI

Feb. 4th, 2026 02:32 pm
[syndicated profile] jobsacuk_math_feed
University of Oxford - Department of Experimental Psychology<br />Salary: £39,424 to £47,779 per annum: Grade 7

Magellan

Feb. 4th, 2026 12:12 pm
[syndicated profile] hettie_feed

Posted by Hettie D.

Magellan is the Philippines’ Entry For Best International Feature at the Oscars, and the reviews were raving. I decided it’s a must-see, even though the movie is almost three hours long. Judging by the description, I expected more or less a traditional, colorful historical movie with a pronounced social message:

At the dawn of the modern era, Portuguese explorer Ferdinand Magellan (Gael García Bernal) navigated a fleet of ships to Southeast Asia, attempting the first voyage across the vast Pacific Ocean. On reaching the Malay Archipelago, the crew pushed to the brink of madness in the harshness of the high seas and overwhelming natural beauty of the islands, Magellan’s obsession leads to a rebellion and reckoning with the consequences of power. A vast, globe-spanning epic from Filipino filmmaker Lav Diaz (NORTE, THE END OF HISTORY), MAGELLAN presents the colonization of the Philippines as a primal, shocking encounter with the unknown and a radical retelling of European narratives of discovery and exploration.

My first reaction was disappointment: it felt more like a Tarkovsky movie, just with prettier landscapes. Iwas even thinking of quietly leaving the screening. But gradually, my perception changed, and I kept watching. If you watch the trailer, it does not give a good impression of the movie. The trailer is more dynamic and less picturesque. And doesn’t show even a percent of violence.

Maybe three hours is too much to say “colonialism is bad.” You decide.

Research Associate

Feb. 4th, 2026 12:29 pm
[syndicated profile] jobsacuk_math_feed
University of Leicester - School/Division: Global, Lifestyle and Metabolic Health<br />Salary: £39,906 to £46,049 per annum, pro-rata if part-time. Grade 7
[syndicated profile] mathoverflow_at_feed

Posted by Startswithone

I've been wondering about what this conjecture is even about and the potential applications of it and so far I can't find any notes/papers on this topic. It'd be appreciated if you can give me some insights into this thing.

Bioinformatician

Feb. 4th, 2026 10:57 am
[syndicated profile] jobsacuk_math_feed
John Innes Centre, Norwich - Informatics Platform <br />Salary: £37,500 to £40,600 per annum depending on qualifications and experience
[syndicated profile] mathoverflow_at_feed

Posted by melwei

According to this question about Mayer-Vietoris in six-functor formalisms, 'all of the "constructible" six-functor formalisms' admit a gluing sequence:

Let $i:Z\hookrightarrow X$ be a closed immersion, $j:U\hookrightarrow X$ the complementary open immersion, and $A\in D(X)$. Then $$ i_*i^!A\to A\to j_*j^*A $$ is a fiber sequence in $D(X)$.

Furthermore, note that such sequences arise whenever $i_*:D(Z)\to D(X)$ and $j_*:D(U)\to D(X)$ are a recollement for $D(X)$ (in the sense of Jacob Lurie's HA A.8.1).

For sheaves on topological spaces, I was able to find references stating that a closed immersion and the complementary open immersion yield a recollement in this sense (e.g. Marco Volpe's thesis, Chapter 4).

For equivariant motivic homotopy theory, Marc Hoyois paper on six functors in that setting states the gluing sequence (Theorem 1.1.4).

For étale sheaves and D-modules, Scholze's lecture notes state the gluing sequences (Proof of Theorem 7.15, Proposition 8.32/Remark 8.34).

Can you recommend any further references for gluing sequences in six-functor formalisms, preferably ones stating the recollement from which they arise?

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