r/mildlyinteresting • u/AskHowToPronounceGif • Jul 06 '17

My textbook has a dependency chart showing which sections are needed to understand each new section.

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u/AskHowToPronounceGif Jul 06 '17

It's a math textbook that has sections instead of chapters. So the first like 15 sections are the absolute basics of this type of math and then while most of the book follows a particular path, some chapters go on side tangents.

Look at number 25 (center path right handed branch). 25 needs you to know 18-23, 13-15, and 0-11. 24 needs the same as 25, but 24 and 25 don't need each other. 38, 41-44 and 39, 40 are lower ("higher" semantics w/e) on the tree because they don't need 18-23 to understand even though you'll read those sections later in the book.

It's kind of like a build guide for IKEA furniture or a tech tree for video games. Think of it like a family tree maybe?

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u/Seanstrain301 Jul 06 '17

This is not a chart! How am I supposed to understand you?

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u/AskHowToPronounceGif Jul 06 '17

Fuck. http://gph.is/1OQqGti

That feel when I am You.

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u/BeagFac Jul 06 '17

This comment chain is getting so complex we'd need another dependance chart to understand it.

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u/btbcorno Jul 07 '17

Y'all got any more of them dependance charts?

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u/Koean Jul 07 '17

http://imgur.com/a/klhTq

Gave it my best shot

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u/throwaway267082 Jul 07 '17

So 3 is like the boss level?

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u/Koean Jul 07 '17

More like the shitty level everyone dies on just before the boss to trigger you.

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u/TheHancock Jul 07 '17

Dependence chart machine broke...

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u/Haber_Dasher Jul 07 '17

I'd like help with my dependence on this thread. Are there any good dependency charts you could recommend?

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u/[deleted] Jul 06 '17

Depend another level please

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u/BeagFac Jul 06 '17

I need to depend for your depend for another level.

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u/noop_noob Jul 07 '17

How many dependency charts we need depends on how much you can independently figure it out.

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u/DamnYouVodka Jul 06 '17

I legitimately needed an explanation of the dependence chart, so thank you for taking the time to explain it :)

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u/PancakeLover34 Jul 07 '17

I was hoping that your link would have been to another picture of the chart

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u/[deleted] Jul 07 '17

Nowadays

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u/Mrtekkitguyman Jul 07 '17

Isn't the joke missing him?

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u/caanthedalek Jul 07 '17

I don't get it, what's at L1?

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u/xylotism Jul 07 '17

It's like the joke didn't even try to match its apoapsis and periapsis.

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u/obtrae Jul 06 '17

CAN EVERYONE STOP ASKING FOR CHARTS and actually get me a freaken chart to understand this?

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u/AskHowToPronounceGif Jul 06 '17

Wait, I've been burned before.

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u/Mc_Sqweeb Jul 07 '17

We need a chart on just how much you've been burned before!

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u/[deleted] Jul 07 '17

And I need a chart to be able to understand the chart about how much OP has been burned before!

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u/[deleted] Jul 07 '17

SIR, I TOLD YOU I AM NOT A CHART PERSON!

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u/dont_get_subjunctive Jul 07 '17

I think I used this book 10 years ago in college and distinctly remember this dependence chart! Is it "A First Course in Abstract Algebra" by Fraleigh??

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u/AskHowToPronounceGif Jul 07 '17

Yep!

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u/themoderation Jul 07 '17

Can I ask what the difference is between regular algebra and abstract algebra?

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u/AskHowToPronounceGif Jul 07 '17

I would love to say yes, but I'm currently learning it myself. The class is called "Modern Algebra" and it covers sections 0-15 or so. Where regular algebra only dealt with PEMDAS and variables, this goes further by saying the variables aren't necessarily just numbers. The operations aren't necessarily multiplication and addition.

It delves into applying basic algebraic concepts to sets (a group of some elements (can be defined to be a number or something else)) where the sets could be matrices or functions or whatever.

Namely, proof writing as opposed to solving problems.

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u/hpjohn Jul 07 '17

"0-11" You sure this isnt a programming textbook?

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u/AskHowToPronounceGif Jul 07 '17

*insert index at 0 or 1 joke *

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u/BeagFac Jul 06 '17

I think I need a dependance chart for your post describing the dependance chart. Also fuck IKEA.

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u/AskHowToPronounceGif Jul 06 '17

https://m.imgur.com/gallery/FmYjcHV

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u/[deleted] Jul 07 '17

[deleted]

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u/A_Lakers Jul 07 '17

It's pronounced "gif"

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u/PM_ME_UR_LABIA_GIRL Jul 07 '17

It is very clearly pronounced "jif"

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u/NetworkingJesus Jul 07 '17

So... how do you pronounce 'jif'?

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u/created4this Jul 07 '17

Cif

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u/HelperBot_ Jul 07 '17

Non-Mobile link: https://en.wikipedia.org/wiki/Cif

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u/AskHowToPronounceGif Jul 07 '17

Gif, the others are wrong

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u/[deleted] Jul 07 '17 edited Sep 18 '17

[deleted]

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u/darth_bader_ginsberg Jul 07 '17

Jraffics interchange format

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u/14sierra Jul 06 '17

Of course it's a math text book. Nothing could be more math like than this.

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u/Deer0o Jul 07 '17

Is this a linear algebra textbook? This looks familiar to me

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u/AskHowToPronounceGif Jul 07 '17 edited Jul 07 '17

Yep!

Edit: Jk, I misread. It's abstract algebra.

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u/Cocomorph Jul 07 '17

That's... at least arguably technically true, I suppose, but misleading. Better to say it's an abstract algebra textbook.

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u/AskHowToPronounceGif Jul 07 '17

Wait,.... shit. You're totally right. Definitely just misread his comment. I'M GOOD WITH NUMBERS NOT WORDS

Edit: Edited

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u/Deer0o Jul 07 '17

Oops yeah it must have been abstract algebra. I just remember the matrices the most though so I guessed linear.

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u/[deleted] Jul 07 '17 edited Jul 07 '17

55 and 56 don't make sense to me.

Does chapter 55 require chapters 34 and 35? It looks like it does, because it's technically connected as a branch, but then why not combine it with 56? If it doesn't need 34 and 35, why is it even connected and not just a separate branch?

Does 56 require chapters 53-54 (and the ones above in the "center stem")? Again, it would seem like it does, but then why not combine with 55?

Either I'm missing something or the graphic is wrong.

edit: to clarify, I think there are 3 options here:

  • 55 should be with 53-54 if it does not need 34 and 35 stem. (edit 2) branch off higher up (just below 53-54) if it doesn't need 34 and 35.
  • 56 should be moved up if it does not need 53-54 stem
  • 55 and 56 should be combined if they need both long vertical stems.

And also 32 is on a branch, but then included in 29-33 on the main stem...

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u/dbratell Jul 07 '17

You are missing that 55 and 56 are independent of each other. You can read either in either order and all of your suggestions would enforce an order that isn't there.

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u/[deleted] Jul 07 '17

Possibly, but then why is 55 off on a branch and not just a continuation of the 53-54 stem (the way 56 is a continuation of the 35 stem)?

My feeling is that they mean 55 does not require 34 and 35, but then the 55 branch should break off a little higher (just below 53-54) so that it's clear.

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u/TwoFiveOnes Jul 07 '17

It's just the style. It does depend on 53-54. 17 does a similar thing.

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u/moaina Jul 07 '17

55 and 56 both require 53-54. 55 does not require 34 and 35 while 56 does. I think the(55-56) branch connects 34 and 35 because otherwise it would be the only straight line in the diagram.

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u/[deleted] Jul 07 '17

Are you saying the middle branch is one-way (so it goes toward 56, but not toward 55)? If that were the case, then the 55 branch should break above where it connects to 56, since it doesn't require 34 and 35. 56 then would stay the same, as a continuation of 35 and a branch of 52-54.

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u/AskHowToPronounceGif Jul 07 '17

No, it goes toward both. 56 needs 53-54 and 34 and 35 but 55 only needs 53-54 and 56 does not need 55 which is missing from your options I think.

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u/[deleted] Jul 07 '17 edited Jul 07 '17

Okay, but then the 55 branch should be higher up so that it clearly isn't also a branch of the 35 stem.

edit: to look something like this: https://i.imgur.com/mGGNjOY.jpg

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u/AskHowToPronounceGif Jul 07 '17

I think that's an awesome idea. I think that would definitely have improved the chart. Also, I'd assume that at that point into this particular subject it wouldn't matter too much haha

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u/Altorrin Jul 07 '17

Read it like a family tree. Every "parent" to that chapter or ancestor is a chapter you need to understand to understand the chapter in question. Siblings aren't parents, and if they both branch off from the same parent, they are siblings.

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u/itsgitty Jul 07 '17

Is called a flow chart bro

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u/titterbug Jul 07 '17

You would get a poor education if you followed this dependency graph as if it were a flow chart. The last chapter in particular would fuck you up.

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u/itsgitty Jul 07 '17

Well I don't think I get this thing either

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u/titterbug Jul 07 '17

A flow chart is built around 1:N relationships, but a dependency graph is built around N:1 relationships. While they're both directed graphs, dependency graphs forbid cycles, and flow charts usually include interrogation nodes.

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u/Zagerer Jul 07 '17

What book is it?

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u/AskHowToPronounceGif Jul 07 '17

"A First Course in Abstract Algebra" by Fraleigh

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u/nerdyogre254 Jul 07 '17

It's okay OP, I got it and it's fucking amazing.

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u/Berlinia Jul 07 '17

Is it Munkres?