Jero H.

Profe de Mates, amante de las TIC´s

[Jero H. @jerohernan]

Miautemáticas

[gaussianos @gaussianos]

Va nuevo sorteo por el 20 aniversario de Gaussianos. Cuando este tuit llegue a 25 RTs, dejamos que lleguen las 00:00 en España y sorteo puro del libro "EULER: Números al límite" entre los RTS acumulados. ¡A participar! 😉

[silencieux @soysilencieux]

No hay mayor cobardía que no tener el valor de hablar con honestidad. Dejar a alguien en la incertidumbre, intentando entender tu desinterés y dudando si quedarse o marcharse, también es hacer daño. La claridad siempre será más humana que el silencio.

[Miguel Ángel | GptZone @MiguelMaestroIA]

🚨 EL MEJOR SKILL PARA CLAUDE.

Ahora puedes usar Claude todo el día sin agotar el límite de tokens.

Este skill genera el PROMPT PERFECTO para cualquier IA:

[𝑽𝒂𝒍𝒆𝒓𝑰𝑨 @ValeriA_Tech]

NotebookLM genera presentaciones que parecen clonadas. Este truco cambia eso completamente.

Y casi nadie lo está usando.

[Raúl | Productividad & IA @Raul_IA_Prod]

🚨ÚLTIMA HORA: Google Gemini tiene funciones increíbles que casi nadie usa

La mayoría solo usa Gemini para prompts básicos… mientras que Google lo ha llenado discretamente de herramientas que reemplazan horas de trabajo en segundos

Probablemente estés usando menos del 5% de lo que Gemini realmente puede hacer

Aquí tienes 10 funciones ocultas de Gemini que te sorprenderán una vez que empieces a usarlas: 👇

[Jero H. @jerohernan]

@CeJuego Pi no es un número infinito, de hecho es más pequeño que la suma de los dedos que un humano tiene en su mano derecha

[Sara Embid | matesconsara 📊🔢🔍 @matesconsara]

📌Después de investigar cómo desarrollar el pensamiento algebraico en primaria, me gustaría aportar mi top 3 de referencias útiles para maestros y profes de mates de los primeros cursos de ESO📌

✨Referencias con tareas buenas, bonitas y llevables al aula 100%✨

¡Hilo va!🧶

[Juan Matías Sepulcre @JMSepulcre]

La Universidad de Luxemburgo dispone del recurso 'Visual Mathematical Dictionary', una nueva web destinada a facilitar el aprendizaje de términos matemáticos (también en castellano):
https://t.co/8kY2UjCGHz

[Tivadar Danka @TivadarDanka]

The 10 Most Important Lessons 20 Years of Mathematics Taught Me:

1. Breaking the rules is often the best course of action.

I can’t even count the number of math-breaking ideas that propelled science forward by light years.

We have set theory because Bertrand Russell broke the notion that “sets are just collections of things.” We have complex numbers because Gerolamo Cardano kept the computations going when encountering √−1, refusing to acknowledge that it doesn’t exist. We have non-Euclidean spaces because János Bolyai did not accept that given a line and an external point, there’s only one parallel line that intersects the point.

A triangle of three right angles breaks one space, but creates another.

No assumption should be set in stone, and I’m not afraid to challenge them. You shouldn’t be afraid either.

2. You have to deeply understand the rules to successfully break them.

Let’s be honest: breaking rules is a cliché.

All of my examples of successful rule-breakings above were executed by experts in their fields: Russell was a master of logic, Cardano of algebra, and Bolyai of geometry.

Think of doing mathematics science as holding a large marble orb in your hands, with treasure inside. You want to open it, but the marble is so sturdy that you can’t just smash it open.

What you can do, however, is to obsessively study it in detail until you find a tiny crack, giving you a way in.

If you don’t know what you are doing, you are just an elephant in the porcelain store.

This holds true outside of math. Miles Davis, legendary jazz musician, famously stated that

“Once is a mistake, twice is jazz.”

Mistakes are easy. Jazz is hard.

3. Understanding happens when you take things slow.

At the university, most of my classes were in classic chalk + blackboard style, and let me tell you, taking notes of formulas, definitions, and theorems by hand from a blackboard is infinitely more beneficial than relying on a PowerPoint presentation.

We were thinking and working together with the lecturers instead of just hanging along for the ride.

Something magical happens when you copy formulas by hand: your mind automatically wraps around the concepts, bending them, studying them.
It’s not just for math but for any topic.

That’s why typing out a solution from an LLM response (or StackOverflow if you are old school, like me) is better than copying and pasting it.

4. The best way to learn is to solve problems.

I just said that “understanding happens when you take things slow.”

Well, the easiest way to take things slow is by being forced to by pushing your skills and knowledge to the limit.

This happens when you are working with tools you don’t know how to use, on problems you don’t know how to solve.

Until I implemented my own neural network library from scratch, my understanding was limited to the user level. I prepared my datasets, ran a couple of epochs, evaluated the model, and repeated the process until I liked what I saw.

Soon, it wasn’t enough. I wanted to dig deeper, so I built a neural network framework from scratch. And another one. And another one that became mlfz, the cornerstone of my next book.

Consuming YouTube tutorials is an extremely inefficient way to improve at anything. If you want to get good, get your hands dirty and start solving problems.

Build.

Create.

Take it apart and put it back together again.

5. There are no shortcuts to mastery.

Once upon a time, the legendary Greek mathematician Euclid was summoned by King Ptolemy I Soter (not to be confused with the astronomer Ptolemy), who wanted to study geometry.

Judging from the fact that two thousand years later, we still call classical geometry Euclidean, you have probably guessed that Euclid was pretty good. However, the king soon got impatient and asked if there was a shortcut.

Euclid replied that “There is no royal road to geometry.”

The man invented the axiomatic approach to mathematics, wrote the second-most printed book of all time, and told a king to f**k off. That’s a pretty impressive resume.

But what does no royal road mean?

That there are no shortcuts.

You can’t pay your way to knowledge; you must put in the work for math and anything else that’s worth doing.

5. Always tackle one issue at a time. Look at special cases, then add complexity step by step.

I’m quite an impatient person. Even though my recklessness has gotten better with age, sometimes I still add two new features to a single commit. I just can’t help myself.

However, if you are a frequent reader of mine, you probably heard me say, “We’ll add complexity one layer at a time,” or something along these lines.
This is not an accident.

Whenever I want to understand a new concept, I know that mentally juggling with more than one ball thought is a recipe for failure, so I avoid it at all costs. Once I’m familiar with the basics, I add more and more details.

Think of the very first time you drove a car. Personally, my head was spinning so hard I didn’t even know I was coming or going. Letting off the gas and gently pressing the brake with one leg, smashing the clutch with the other, finding the right gear with my right hand, and holding the steering wheel steady with the other. That’s just slowing down before a turn. (I’m European, so I learned to drive on a manual.)

After twenty years of experience, I can do all this in my sleep, and I have learned it one step at a time.

Driving on autopilot is the problem now, but that’s a topic for another day.

7. Finding the right perspective is half the success.

The all-time most-read post of The Palindrome is titled Matrices and graphs, and it is secretly about this principle. By looking at matrices as graphs, we can immediately prove complex and profound results. Like in computer science, each implementation has its pros and cons. The proper choice of data structure can make or break a problem.

Matrices on one hand, graphs on the other.

Algebraic expressions like a + ib on the one hand, and vectors on the Euclidean plane on the other.

Driving your startup to the ground on the one hand, a priceless learning opportunity on the other.

Success and failure are matters of perspective: you win, or you learn.

8. Asking questions is a superpower.

“It’s not that there are no stupid questions,” the words of my professor echo in my ear, “it’s that not asking your questions is stupid.”

You probably don’t know this about me, but I’m quite shameless. I never had a problem with raising my hand and asking my question during a lecture, no matter what it was.

My mid-(and sometimes after)-lecture discussions with the professors had a notable trajectory of improvement, from “What does that ∀ symbol on the board mean?” to discussing open problems and eventually solving a couple of them.

The key to that improvement was my blatant disregard for others’ perceptions of me, daring to play some wrong notes to master my instrument.

9. Talent is just the icing on the cake. The rest is hard work and perseverance.

When people discover that I have a PhD in mathematics, one of the most common reactions is that “you must be a genius.”

Let me tell you, this could not be further from the truth.

I was never a mathlete nor a brilliant researcher. I am a slow thinker. I have problems with mental arithmetic.

However, three redeeming qualities helped me get where I am today. I am

• emotionally resilient,
• curious,
• and a hard worker.

Without these, no amount of brilliance can put you at the top or even in the middle of the pack.

10. Don’t give too much credit to advisors and professors. They are people like you, and experience is the only thing they have over you.

As an entrepreneur, I follow quite a few notable people who have successfully realized their vision, solving problems to move our world forward. Their audiences are full of the young and motivated, yearning to carve out their piece of the pie, failing to realize that the only path they can walk is their own.

What worked for Nikita Bier and Pieter Levels might not work for you.

Why? Because you have a different personality, a different socio-economic background, and potentially a different zeitgeist.

“No man ever steps in the same river twice, for it’s not the same river and he’s not the same man.”

[Jero H. @jerohernan]

@MsIdeasMnosCtas Muy interesante. Gracias por tu aportación.

[Lola Morales @lolamenting]

Es que no me puede gustar más esta web para analizar datos mundiales. Por si no la conocéis (profes de mates o de GH), echad un ojo sobre todo a las gráficas temporales y al Dollar street https://t.co/nlBvXZo5ME

[Jero H. @jerohernan]

https://t.co/9HPHEL9pgn

[Jero H. @jerohernan]

@p_trivino Felicidades por el trabajo realizado. Excelente. Gracias por compartir

[Jero H. @jerohernan]

I just registered for a Real Betis Fanzclub experience : "Win a VIP Experience during Real Betis / FC Seville" powered by @the_fanzclub. Join me and try your luck 🍀 #fanzclub #realbetis #contest https://t.co/lrZCFZ98p8

[Jero H. @jerohernan]

@arxyeleach Antes de “p” y “b”, debes poner una “m”. No deberías cometer este tipo de errores en palabras como Balompié, imbécil.

[Real Betis Balompié 🌴💚 @RealBetis]

🟠🟠🟠🟠🟠🟠🟠

Fue "una gran aventura llena de emoción".

Gracias por todo, 𝑻𝒐𝒓𝒊𝒚𝒂𝒎𝒂 𝑺𝒂𝒏.

#AkiraToriyama #DragonBall

[Jero H. @jerohernan]

Micrófono-Prismáticos en los #Goya2024

[Pilar Alegría @Pilar_Alegria]

Por alusiones: no tengo una hija, sino un hijo. No va a un colegio privado, sino público. Hice mi carrera y un máster después. Si no dice la verdad en algo así, qué no pasará con el resto. Las palabras machistas de Losantos y la sonrisa cómplice de Feijóo hablan por sí solas.

[The Fanzclub : Join now! @the_fanzclub]

🎁Sorteo🎁

🎟2 ENTRADAS🎟
#RealBetisGirona

¿Cómo obtenerlas?
1️⃣ Haz RT y dale like a este tuit.
2️⃣ Visita https://t.co/qQPg7v7aF0 y haz clic en "registrarse ahora".

[Jero H. @jerohernan]

I just registered for a Real Betis Fanzclub experience : "Win 2 Tickets for the game" powered by @the_fanzclub. Join me and try your luck 🍀 #fanzclub #realbetis #contest https://t.co/YglwIN2FWE