25 XI 2022

19 I 2023

this week is kinda crazy

I have a complex analysis test on saturday and the professor said that it will cover the entire semester. thank god I might get away with not knowing anything about analytic number theory lmao

I had troubles sleeping lately, it takes me about 3-4 hours to fall asleep every day. I sleep a lot during the day and it helps a bit but I still feel half-dead all the time. every time I fall asleep my brain can't shut up about some math problem

for the algebraic methods course we were supposed to state and prove the analogue of Baer criterion for sheaves of rings. I was the only person who claimed to have solved this, so I was sentenced to presenting my solution in front of everyone. the assertion holds and I thought I proved it but the professor said that the proof doesn't work, here is what I got:

he said that we cannot do this on stalks and we have to define a sheaf of ideals instead. when I was showing this I had a migraine so no brain power for me, I couldn't argue why I believe this to be fine. whenever two maps of sheaves agree on each stalk they are equal, so if we show that every extension on stalks is actually B → M on stalks, then doesn't that imply the extension is B → M on sheaves?? probably not, but I don't see where it fails and I'm so pissed that I was unable to ask about it when I was presenting, now it's too late and this shit keeps me up at night

I enjoy sheaf theory very much and I can't wait to have some time to read about schemes, I have a feeling that algebraic geometry and I are gonna be besties

during some interview Eisenbud said that when deciding which speciality to choose one should find a professor that they like and just do what that professor is doing lol. I feel this now that I talked some more to the guy who taught us commutative algebra. since my first year I was sure that I will do algebraic topology but maybe I will actually do AG, because that's what he's doing. is having one brain enough to do both?

anyway I'm glad that my interests fall into the category of fashionable stuff to do in math these days. my bachelor's thesis is likely going to be about simply-connected 4-dimensional manifolds, which is a hot research topic I guess. I won't work on any open problem because I'm just a stupid 3-year, not Perelman, but it will be a good opportunity to learn some of the stuff necessary to do research one day

20 X 2022

the past few days were hectic

my grandma's burthday was nice, but very stressful, because until the very last minute I didn't know if I can go home with my mother or if I would have to take the train that would arrive at my city at 5am

I tried to study on my way to the event but unfortunately I didn't do much

annotating categories for the working mathematician was the peak of my abilities

I really enjoy the course btw, which is a bit surprising, because there are so many negative opinions about the teacher. right now we are at abelian categories and probably soon will move on to homological algebra

I spent a long time studying adjunctions but I can say that I understand them pretty well now

maybe a part of the reason why I like category theory so much is that I like drawing and chasing them diagrams

I started doing the second problem set for the analytic functions course. they are much easier than the first one. I managed to solve a half of them today. last time it took me a whole day to solve one problem

for the next few days I plan to

complete the analytic functions homework

commutative algebra homework

category theory homework

abelian categories

localization

analytic functions, differentiation and integration of complex functions

wish me luck and I wish you a pleasant evening

Inflating regular pentagon through underlying stars. The sequence of side lengths is essentially Fibonacci.

meanwhile typical conversations between my friends:

– so what do you do in math?

– differential equations

– ugh I always hated differential equations

– you?

– general topology

– ugh I always hated topology

The curse of a mathematician is to work in a disliked field

Hello, lovelies! I’ve gotten a couple of asks about studying so I decided to condense them into one post for you guys! I’m trying to hit a bunch of different topics so if you need an even more specific post you can send an ask! Without any further ado, have some tips! My studyblr is @spacey-scholar​

Prep

First, you always need a good base for your day! Especially if you’re studying a lot.

Make a good full breakfast! Ex. Eggs and Toast, Smoothie and fruit, Pancakes and a cup of juice. 

How’s your hygiene? Do you need to shower, brush your teeth, wash your face, condition your hair? Do it! You’ll be distracted if you feel messy!

Get dressed like it’s a normal day. Staying in PJ’s is okay! But being ready for the day seriously helps focus!

Likewise, your space should be clean. A clean space is a clean mind! Remove dishes, trash, scrap paper, and extra items. Wide down your desk, organize your pens and books. Your space should feel like your space!

Now make a list of what you need to get done! What needs to be done Now, what needs to be done Soon, and what needs to be done Later? 

Order your list how you want your day to go, and don’t put super-tough subjects back to back, or subjects that are similar exercises i.e. reading thirty pages of two different books back to back is no fun.

The Studying

It’s important to buckle down with No Distractions! If you find yourself distracted put your phone away! If you need your phone, put it on Do Not Disturb until you’re done. I also do this at night for better sleep. 

Pick the best technique for you, Pomodoro, reward-based, group studying, etc.

Play music but only if it will not distract you! If you sing along or daydream it’s the wrong music! Classical, Lo-fi, and White noise are all good! My Spotify Here has some good ones.

Use a nice journal (I don’t mean expensive!) and pens/pencils you enjoy using. I like to have a specific journal and color dedicated to each subject. 

Take notes on recorded lectures and classes, if you’re doing online classes right now try to screen record or record the audio! That way if you space out you can play it later and take notes, and you can absorb the lesson better instead of being distracted.

Don’t worry about your notes, stationary, pictures, being beautiful and your grades being perfect. Life doesn’t always look the way it does on Instagram. And the people who spend hours trying to get a good photo of their coffee are not studying! 

Use flashcards! Quizlet is good if you need premade ones! If you can save up and buy them, Barrons AP Flash Cards are the best in my opinion. Very clean, not too long, very durable, and cover all subjects.

Feeling Distracted 

If you catch yourself drifting off and getting into your head, get up and take a quick walk, stretch, or energizer. 

It’s okay if this happens, don’t guilt yourself! practice affirmation. The best and smartest still get distracted. 

If you are drifting, why? Are you hungry? Tired? Thirsty? Bored? Get a snack and some water, take a break and rest, find a way to make your studying more enjoyable. 

Remember that Motivation and Discipline are different things. Sometimes we just won’t be motivated, we won’t want to do it and it will be rather frustrating. But the cure to this is not shaming its discipline. Remind yourself “This may be hard, and I may not want to do this, but I want to reach my goals and If this is what It takes I will make it happen. 

Always do just one more page of you’re tired. One at a time and oh you did it! Maybe just one more? One more? Eh, one more just to finish the train of thought, Oh just- I’m done? Nice!

If you really can’t focus just move on and come back to this subject, you can always ask for help.

Supplementary Things

There are so many apps you can use to study, for free! My favorites are Tide, Quizlet, Focus Keeper, Forest, Flora, Egenda, SpanishDict, Photomath, and Kahn Academy. 

You can also join a study group! You may know one, but if you don’t, there are a lot of online ones! I’m in a study Discord and have been for a while! it helps a lot and motivates me to finish my work!

You can make a studyblr, but don’t do it just for the aesthetics! It’s about studying, and sometimes that gets messy! Sometimes we fail a test, we spill our tea on our notes, we cry because we don’t understand the formula. That’s the part you don’t see!

Having cute stationery can really help, as well as nice organizers and decorations for your space! I don’t have much money so I get a lot of stuff on Amazon or FB Marketplace.

Health

Remember that no matter what you are good enough. It’s okay if you fail, it’s okay if you struggle.

It’s also okay if your path doesn’t go the way you expected! Maybe you go to a different school than expected! Or choose a trade instead! Maybe you take a gap year! Maybe your passion changes! Maybe it changes six times!

Your health is always more important than your school. If you are in pain, mentally or physically, if you are anxious, exhausted, burnt out, talk to your teachers about it! You matter more than a grade.

Your best is good enough! And your best doesn’t look the same as someone else’s best! Don’t compare!

Now go get out there and study!

I finally tried mindmaps to keep track of the 200 kinds of morphisms and another 100 kinds of sheaves (that one is work in progress)

I kinda like the result and I hope to finally use my notes in the future

the alphabet is like, there's the "a" region (abc...), for just, things, there's the "f" region (fgh..), for functions, there's the "i" region (ijk...), for indices, there's the "n" region (nm...), for integers, and the "p" region (pq...), for integers that are prime, there's the "t" region (tsr...), for time and progression and other axes that aren't the usual ones, and then there's the "u" region (uv...), for like, i guess open sets and differentiable functions and the such i guess, and then finally there's the "x" region (xyzw...) for just, variables that are more variable-y

there's also o and l but you shouldn't use those

reverse gaslighting where i pretend to know exactly what you are talking about

25 VIII 2022

I found the most beautiful math book I have ever seen

it covers the basics of algebraic topology: homotopy, homology, spectral sequences and some other stuff

one of the authors (Fomenko) was a student when this book was being published, he made all the drawings. imagine being an artist and a mathematician aaand making math art

just look at them

other than those drawing masterpieces there are illustrations of mathematical concepts

I'm studying homology right now, so it brings me joy to know that this book exists. I don't know how well it's written yet, but from skimming the first few pages it seems fine

I just finished watching a lecture about exact sequences and I find the concept of homology really pretty: it's like measuring to what extent the sequence of abelian groups fails to be exact

I'm trying to find my way of taking notes. time and again I catch myself zoning out and passively writing down the definitions, so right now I avoid taking notes until it's with a goal of using the writing as a tool for acquiring understanding. I'm trying to create the representations of objects and their basic relations in my mind at first, then maybe use the process of note-taking to further analyze less obvious properties and solving some problems

I will post more about it in the future, we'll see how that goes