Cayley graphs in Mathematica
The previous post mentioned the group S4, the group of all permutations of a set with four elements. This post will show a way to visualize this group. The Mathematica command CayleyGraph[ SymmetricGroup[4], VertexLabels -> Placed["Name", Center], VertexSize -> 0.4] generates the graph below. This is an interesting image, but
Read moreAre corporations too influential?
Welcome to Startups Weekly. Sign up here to get it in your inbox every Friday. This week, I’ve been doing a lot of thinking about how some of the biggest companies in the world have as much — if not more — power than entire countries. Most countries, at least,
Read morePermutations and centralizers in Mathematica
I had a fleeting thought about how little I use group theory when I realize I used it just this week. A couple days ago I needed to know which permutations of 4 elements commute with reversal. If r takes a sequence and reverses it, I need to find all permutations
Read moreTrend Micro joins Canadian Cyber Threat Exchange
Another security vendor has joined the Canadian Cyber Threat Exchange, the country’s not-for-profit threat-sharing hub for infosec pros. Trend Micro said this week it has become a member to contribute knowledge, threat insights and to help support cyber resilience across the country. “Trend Micro is deeply committed to innovation and
Read moreFTC finally proposes ban on fake reviews
The FTC has proposed a new rule banning numerous forms of fake reviews online, from outright fabricated ones to those that are sketchily repurposed or secretly manipulated. It may not totally rehabilitate the notoriously unreliable online review ecosystem, but it could help make things a bit more bearable. This rule
Read moreSecretive hardware startup Humane’s first product is the Ai Pin
Humane, the startup launched by ex-Apple design and engineering duo Imran Chaudhri and Bethany Bongiorno, today revealed details about its first product: The Humane Ai Pin. It’s been a long time coming. Humane has kept its work more or less under wraps since 2018, its founding year, unveiling no products
Read morePolice want robotaxi video footage to help solve crimes
Police are starting to turn to robotaxis — specifically all of that footage captured by cameras — for video evidence to help solve crimes. While it might not be a trend quite yet, evidence suggests that the robotaxi is the new proving ground for privacy advocates and law enforcement, especially
Read moreTwitter now requires an account to view tweets
If you’re not logged into your Twitter account and try to view a tweet, you’ll be presented with a sign-in screen. And if you don’t want to have an account on the bird app, too bad! Twitter hasn’t commented on this change, and given how sloppy the platform has been
Read moreIRL’s ex-CEO says he’s ‘shocked’ about the company’s fake users
IRL’s company logo. | Photo illustration by William Joel/The Verge I have a packed issue this week, starting with the implosion of a once-hot social media startup called IRL. It raised $200 million at over a $1 billion valuation, and now its board is dissolving the company after finding that
Read moreMontreal-based Maxa wins the Snowflake Startup Challenge in Las Vegas
Maxa, a Montreal-based startup that offers an AI-enabled cloud-based financial analysis application, won the Snowflake Startup Challenge, a competition for startups that create innovative applications and products powered by Snowflake’s Data Cloud. Maxa was the first ever Canadian company to reach the finals of this competition, where it faced Germany’s
Read more