Complex Numbers (Book)

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Complex Numbers

Complex Numbers

A complex number is expressed in the standard form a + bi, where a and b are real numbers and i is defined by i^2 = -1 (that is, i is the square root of -1). For example, 3 + 2i is a complex number.

The bi term is often referred to as an imaginary number (though this may be misleading, as it is no more "imaginary" than the symbolic abstractions we know as the "real" numbers). Thus, every complex number has a real part, a, and an imaginary part, bi.

Complex numbers are often represented on a graph known as the "complex plane," where the horizontal axis represents the infinity of real numbers, and the vertical axis represents the infinity of imaginary numbers. Thus, each complex number has a unique representation on the complex plane: some closer to real; others, more imaginary. If a = b, the number is equal parts real and imaginary.

Very simple transformations applied to numbers in the complex plane can lead to fractal structures of enormous intricacy and astonishing beauty.

http://www.ddewey.net/mandelbrot/

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Turkey DrumStik

about an hour ago
In response to "Barley There"

And approximately 15 seconds later, someone's going to screech about genetically engineered crops.

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Write_Mikey_Write!

a day ago
In response to "Global Domination"

A little girl wearing a Hello Kitty shirt in Middle-of-Nowhere, Siberia will certainly make you wonder how it got there. My grandson has a souvenir t-shirt with a Terex 33-19 "Titan" on it. When it was built in 1973, the Titan was the largest, highest payload capacity truck ever built, a title it held for 25 years. The thing is, the truck on that t-shirt is on display in Sparwood, BC, Canada - over 1000 miles from here, and his mom got the shirt at a local thrift store. Makes me wonder.

Oh, yeah - I thought 'Schrödinger's Hello Kitty' was funny, too.

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Adherennium Plotting something

a day ago
In response to "Global Domination"

For whatever warped reason, 'Schrödinger's Hello Kitty' has tickled my funny bone.

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Brandiwyn🎶

Nov 12, 2024 at 10:50am
In response to "Blond Man's Bluff"

That's interesting about the two spellings of blonde. I always thought blonde referred to the person and blond referred to the hair. But I never bothered to look it up, So you've catered to my lazy today.

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Kåre เลียม Enga

Nov 9, 2024 at 1:02pm
In response to "It Was a Dark and Starry Night"

Ah... but why did he see those swirls when many of us don't? A totally different discussion... out of thin air... which is a frozen fog today when I gaze out the window.

Humans have great skills of observation; some of us extraordinary skills. Is The Scream depictive or evocative? 😱

Turkey DrumStik

Nov 9, 2024 at 11:04am
In response to "It Was a Dark and Starry Night"

Frankly, I'm more surprised to see reasonably good reporting from CNN. I'd given up on their ability to rein in their tendency toward loaded speech.

2 Like

JayNaNoOhNo

Nov 8, 2024 at 12:00pm
In response to "Bungalow Bash"

For the love of God, what did I just read? That is by far the worst use case of a bungalow I've ever seen, and a fundamental misunderstanding of the value of front porches—and the size of bungalows.

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Turkey DrumStik

Nov 8, 2024 at 9:47am
In response to "Bungalow Bash"

"People don't change their minds on the internet. They usually do that in books, battlefields, or not at all.

Yeah, that's a little bleak."

Bleak and also inaccurate.

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Kåre เลียม Enga

Nov 7, 2024 at 10:19pm
In response to "Past and Future Intents"

I must live in the present. In the past I daydreamed a lot... probably to escape the bruises of reality; however, I need to be more aware crossing streets or even how I get out of bed (no rapid movements without thinking of consequences).

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Lilli 🧿 ☕

Nov 7, 2024 at 10:58am
In response to "Past and Future Intents"

If the aforementioned exercises don't help; there's still liquor.

3 Like

February 21, 2019 at 12:45am

#952598

Emotion

I've been feeling frustrated lately. No, not because of that. Or even because of that. I don't even know why.

Emotion is like a foreign country to me: some things are familiar, but I don't speak the language, I don't fully grok the customs, and I feel like anything I do could be misinterpreted.

What I don't understand, specifically, is that this isn't the first time I've worked on improving my overall health through a combination of diet and exercise - but past attempts have left me feeling better, not worse. Usually, I take some pleasure and derive satisfaction from working toward a goal of that sort, and seeing real progress. Not as much as I get from instant gratification, of course, but some.

This time, though, I have been seeing real progress, and apart from a bit of overindulgence on Monday (something I had planned for), I've been pretty good about sticking to the basics: eat right and exercise. And yet, instead of feeling good about things, I've become short-tempered and sensitive to the slightest things going wrong.

So yeah, like I said, I don't understand it at all. Clearly, I am missing something. That happens sometimes; what's obvious to other people is often obscured to me. It's possible that taking a break from my hedonistic lifestyle has caused some cognitive dissonance; I know I resent the idea that in order to have a chance to live longer, I have to chill out on a lot of the things that make life worth living. That could have something to do with it, and yet I haven't gotten to the point where I'm ready to give it up and go back to pizza and beer. I'll get to that point, eventually, but not today.

Only thing I can think of to do is to channel my rage into extra effort toward my goal, but that doesn't address the problem: where is this abominable emotion coming from? I suppose I could see a shrink, but that hasn't been all that useful for me in the past.

I figured maybe by writing about it, I'd gain some insight. But now I've done that, and I haven't gotten any ideas.

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