Dr. Meirion PhD

@Math_files Not all numbers 'definitely' fall into a 4-2-1 loop, it's never been proven, though billions of numbers have been checked. The problem is that it may be possible for a number to fall into a different loop that doesn't collapse to 421 and we haven't found it yet.

This is the most dangerous problem in mathematics. Here’s how it works. Pick a number — seven. (you can take any number). Now apply two rules: 1. If the number is odd, multiply it by 3 and add 1.  3 × 7 = 21, plus 1 = 22 2. If the number is even, divide it by 2.  22 ÷ 2 = 11 Now we keep applying the rules: 11 is odd → 3 × 11 + 1 = 34 34 is even → 34 ÷ 2 = 17 17 is odd → 3 × 17 + 1 = 52 52 → 26 → 13 13 → 40 40 → 20 → 10 → 5 5 is odd → 3 × 5 + 1 = 16 16 → 8 → 4 → 2 → 1 Now 1 is odd → 3 × 1 + 1 = 4 But 4 → 2 → 1 So we are in a loop: 4 → 2 → 1 This is known as the Collatz conjecture and says that every positive integer, if you apply these rules, will eventually fall into the 4 → 2 → 1 loop.

@BBCSportWales Their not there

Great Britain start their campaign to qualify for the Winter Olympics today 🏒 There last appearance was in 1948! They face Romania, China and Serbia in Group H of Round Three, with all games at the Vindico Arena in Cardiff 🏴󠁧󠁢󠁷󠁬󠁳󠁿 #BBCIceHockey

@ourrachblogs Agree with Rumours 👍

@implausibleblog @stephenbarr4

Imagine you’re at the supermarket… Instead of scanning items at the checkout The supermarket has imposed a new rule meaning every item code is keyed in And every item stamped. …then imagine the supermarket telling you the long queues have nothing to do with the new rule.

@JolyonMaugham Oh it occurs to them, they just don't care, they laugh at those who abide by the rules

- No, I won't stop politicizing the Nashville School Shooting. - No, I won't accept your "Thoughts and Prayers". - No, I won't accept this as 'just another Monday in America'. - No, I won't think drag queens are a bigger issue. - No, I won't stop holding politicians accountable. Bill Lee Included. - No, I won't stop fighting for the children in this country's right to live and learn. - No, I won't stop and NEITHER SHOULD YOU!

#BREAKING: Well-Regulated Militia Opens Fire In The Covenant Christian School In Nashville TN; Cheap Thoughts And Useless Prayers Now Being Rushed To The Scene ... more on this soon-to-be-forgotten-and-then-repeated story as it develops ...

@mrjamesob Imagine the fuss on Twitter if Nigeria were playing Germany!

So it’s SPA versus GER. This throws Thursday’s Mystery Hour in to complete disarray! Steward’s Enquiry incoming…

@Sargon_of_Akkad Noble be fucked! They're all narcissists.

If there is one thing that people like Donald Trump, Kanye West and Elon Musk have proven to everyone, beyond a doubt, is that they didn't do it for the money. No matter what they did or what happens to them, that is noble in it's own right.

@thebarryhorns I've known this for 50 years!

Feel embarrassed I didn’t know this

@BBCWorld So Elon Musk wants to fire half the people who built up a successful company which sold for $44 billion. 🤔

"We acknowledge this is an incredibly challenging experience to go through, whether or not you are impacted" Read Twitter's memo to staff in full ⬇

@AJRichardsonMP The same Liz Truss who worked for Shell. 🤔

@WalesRugbyL @AllWalesSport @RLWC2021 @BBCSportWales @S4Cchwaraeon @ITVWales @Swinton_Lions I hope they picked Dalton Grant as main jumper in the line-out. I know they don't have line-outs in League? 🙃

Carfan Cymru 🏴󠁧󠁢󠁷󠁬󠁳󠁿 John Kear has named the 24 players that will represent #CymruRL Men in @RLWC2021. Mwy: bit.ly/CymruMenRLWC

@TimHarford @numberphile Cantor's infinities; it's just full of holes

Back in 1994/95, I studied mathematical logic with Liz Truss. Just the two of us + the prof. Cantor's infinities. Peano arithmetic. Turing machines. All the good stuff. I wonder if it will help her with the job? Let's hope so.

@philsteele1 All bow to the 'Hoge'

*bowling

The saddest and (maddest) thing about watching Welsh Fire tonight was seeing Glamorgan legend Michael Hogan bowing for Southern Brave. #ZeroWelshEvenLessFire

🏏Good luck to Robin Jones, captaining Wales o70s, and Nick Hatton, playing for Wales 060s 3rd XI in county competition quarter-finals #MenInMaroon #OldIsGold #Machen

Sorry I know this sounds thick but wtf are they even having these leaders debate when no one in the general public can vote for them anyway? I’d rather The Bourne Identity for the millionth time…

“I absolutely accept that the UK voted to leave the EU… Leaving the EU makes it much harder to leave the UK. That’s because we ASKED, we NEGOTIATED, we VOTED for this” This needs to be required viewed for all Brexiteers. You voted for these consequences.