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christianp, to random
@christianp@mathstodon.xyz avatar

Parenting is equal parts being woken up at 04:00 and being blown away by how clever they are.
Yesterday my daughter delivered on both counts, and made these cute kitten sandcastles.

christianp, to random
@christianp@mathstodon.xyz avatar

Outlook on the web has a fun new bug (in Firefox on my Ubuntu PC) where the cursor is invisible in certain positions.

MartinEscardo,
@MartinEscardo@mathstodon.xyz avatar

@christianp Maybe it's a feature.

christianp, to random
@christianp@mathstodon.xyz avatar

I have several hundred strips of paper in two colours.
What should I make with them? I reckon something woven would be good, but what?

mathcination,
christianp,
@christianp@mathstodon.xyz avatar

@mathcination ooooooh!

christianp, to random
@christianp@mathstodon.xyz avatar

My friendly local bike mechanic, in the course of replacing my bike's cassette, has just discovered that the bearings underneath have completely disintegrated.
How does that happen‽

christianp,
@christianp@mathstodon.xyz avatar

Mr Bike says "there are increased loads on the bearings especially with taller riders".

Well. Poor old beanpole me.

ColinTheMathmo, (edited )
@ColinTheMathmo@mathstodon.xyz avatar

@christianp It's almost as if using things runs the risk of wearing them out.

Who'da thunk it ?!?

christianp, to random
@christianp@mathstodon.xyz avatar
mair,
@mair@mathstodon.xyz avatar

@christianp so it does! neat

taatm,
@taatm@mathstodon.xyz avatar

@christianp @57isprime
What area of maths deals with interference?

Primes are just where there is no interference from all previous primes on the frequency of 1.

christianp, to random
@christianp@mathstodon.xyz avatar

The weather forecast says highs of 12C for the next week.
It's JUNE!

dougmerritt,
@dougmerritt@mathstodon.xyz avatar

@christianp It was 32C here in Silicon Valley yesterday.

I'll take your 12C, thank you very much.

christianp, to random
@christianp@mathstodon.xyz avatar

Can we do six degrees of separation with Rachel Reeves, Labour shadow chancellor, and Keanu Reeves, widely-loved actor?
I'll take any link - TV appearance, music credit, family relation,...

christianp,
@christianp@mathstodon.xyz avatar

@millerdl ooh, I feel good about that

ColinTheMathmo,
@ColinTheMathmo@mathstodon.xyz avatar
christianp, to random
@christianp@mathstodon.xyz avatar

Now that I have realised I can do this, I am a bad person:

ssh other_pc 'cd repo && git diff' | git apply

pozorvlak,

@christianp I mean, it's not the ideal way to do that, but AIUI it's entirely deliberate that you can pipe the output of git diff to git apply.

christianp,
@christianp@mathstodon.xyz avatar

@pozorvlak yeah, I've piped diffs into git apply before, but usually I make a patch file, then transfer it to the machine I want to apply it on. The new thing to me is that I can write a single line for a one-off "get the changes I made elsewhere" action without adding a remote to the git config or going through github

christianp, to random
@christianp@mathstodon.xyz avatar

The UN says that today is World Bicycle Day (https://www.un.org/en/observances/bicycle-day)

I've unknowingly celebrated with quite a bikey day: I took the kids to school in the #BucketBike, rode my hybrid bike down to the mechanic to get it fixed, then rode the bucket bike to the supermarket for a bit of shopping, then I'll take it back up to school to pick the kids up.

Lovely weather for it!

ddrake,
@ddrake@mathstodon.xyz avatar

@christianp @haraldkliems it's Madison Bike Week here -- did you schedule this to coincide with the UN Day?

(For myself, I celebrated by doing what I do every school day when the weather is nice: I biked my daughter to school on my cargo bike, and then headed off to work...now, let's see if I can dodge the rain forecast for later today...)

#MadisonBikeWeek #MadisonWI

christianp, to random
@christianp@mathstodon.xyz avatar

"It's a simple task," I thought, "don't overthink it, just use a spreadsheet."

I can't work out how to do this: I have two series of height measurements of my kids, along with their ages when the measurements were taken.
How do I plot them both on the same scatter graph, so I can see which kid was taller at any age?

I thought that if I added a column saying which kid each measurement was from, I'd be able to use it to set the marker colour or style, but that doesn't seem to be an option.

Please don't suggest any other tools for this: I'm more than capable of doing it outside a spreadsheet; I just want to know if it's possible in Google Sheets.

christianp,
@christianp@mathstodon.xyz avatar
GerardWestendorp,
@GerardWestendorp@mathstodon.xyz avatar

@christianp @ambiguousname
I made similar plots for my kids. I was worried at first that i missed a lot of data, but turns out that till the age of 10 the growth curves are extremely smooth, and identical for 3 kids. The "puberty growth spurt" is much more randomized. I found this picture that confirms my experience:

christianp, to random
@christianp@mathstodon.xyz avatar

It can be hard to articulate how #dyspraxia affects me.
The clumsiness is easy - I drop things and bump into things a lot more often than most people.
But the executive function problems are harder to understand.
Yesterday I had a perfect example of it:

I needed to take the bin out. First I had to go and pick up the bin. Then I had to decide whether I'd go out through the front door, or the garage. I chose the garage, so I opened the garage door. I got outside and...

I wasn't holding the bin. The first step had completely vanished from my mind and I didn't realise until I needed to be holding a bin.

christianp,
@christianp@mathstodon.xyz avatar

PS shout out to the medical student who told me authoritatively that I couldn't possibly be dyspraxic because I can flip a pancake.
I hope you paid more attention in lessons before graduating!

seano,
@seano@mathstodon.xyz avatar

@christianp oh my goddd, this kind of stuff pisses me off so much. I had a pediatrician tell me for years that actually I couldn't have narcolepsy cause only obese children could... Which uh, is not how that works at all. But hey, at least I got a laugh out of that when I brought it up to my current sleep doctors.

christianp, to random
@christianp@mathstodon.xyz avatar

After upgrading Ubuntu to 24.04, but not immediately, I started having a problem where the system would just show an all-white screen on boot.
After searching, I tried updating my BIOS firmware, but that didn't fix it.
I've finally managed to work out how to turn off the proprietary nvidia drivers from the command line, and it's now showing something, with the open source nouveau driver.
Next I'll try re-installing the latest nvidia driver, and see if that works.

Writing this more for my own reference next time it happens than anything else.

christianp,
@christianp@mathstodon.xyz avatar

I came back home and it's back to the white screen. Uninstalling the nvidia drivers doesn't fix it.
Argg!! What do I do??

christianp,
@christianp@mathstodon.xyz avatar

Yarr, it's driving me nuts!
The monitor was still displaying the white screen aftrer I pulled the HDMI cable out, and then power cycling it.
So is it setting a mode on the monitor??
I plugged the HDMI cable into a different monitor, which worked, and then back into the original one, which suddenly came to life!

WHAT IS GOING ON

christianp, (edited ) to random
@christianp@mathstodon.xyz avatar

I'm running the #BigMathOff again, this July.

The Big Internet Math-Off is a just-for-fun tournament that I and a few friends have organised on @aperiodical, ostensibly to find the World’s Most Interesting Mathematician.

Some great people have already signed up but I still need a couple more to complete the list.

I'm particularly keen to represent a range of genders, nationalities and backgrounds.

There's more information about the competition at https://aperiodical.com/please-take-part-in-the-big-internet-math-off/

If that sounds like fun and you'd like to take part, please tell me!

UPDATE: I now have 16 competitors. The Math-Off is go!

christianp, to random
@christianp@mathstodon.xyz avatar

I've seen discussion around several in-person only events lately, where the organisers justify it by saying they can't get the best quality of conversation online.

Well, you can't get any of my conversation at an event I can't get to.

An in-person event that you have to travel to excludes people with caring responsibilities, disabilities, and limited funds.

adverbially,
@adverbially@mathstodon.xyz avatar

@christianp I would love to get better at attending remote events and conferences. I just don't know how to make connections or socialize on e.g. a Slack channel where everyone is talking at once and not to anyone in particular.

christianp,
@christianp@mathstodon.xyz avatar

I think I'm largely preaching to the converted about this on the fediverse, but I have a reason:

Many of you, at some point, will be involved in the planning of an event. Please be the person who pushes the other organisers to really justify running the event in-person only. If there's any way remote attendance can be accommodated, please fight for it!

christianp, to random
@christianp@mathstodon.xyz avatar

@standupmaths I'm looking through old #BigMathOff posts and saw your one about the projective plane: https://aperiodical.com/2018/07/the-big-internet-math-off-round-2-matt-parker-v-jo-morgan/

Did you ever get that animation re-made?

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