View Full Version : Infinity and irrational numbers...

Cacophonix

25th Sep 2013, 23:45

Lord, (hell you know how much I like chance) I hear the sound of those born in hell and who eat babies... ;)

Oh Lord Baal...:ok:

I speak to the Greeks, those Pythagorians who are disgusted by partial numbers...

To those here who are statisticians (musicians may apply), PPRuNers too...

Do you dig numbers, maths, stats or do you think it is one hell of a load of bull...?

Tell us about the numbers you love...

Caco

G-CPTN

26th Sep 2013, 00:17

69 . . . . .

Ascend Charlie

26th Sep 2013, 00:18

Is it just coincidence, or are Pi's just round?

Some people say that i am unreal, but I say "i IS unreal."

Airborne Aircrew

26th Sep 2013, 00:20

Is it just coincidence, or are Pi's just round?

Fat bastard... :E

Dak Man

26th Sep 2013, 00:21

I love numbers, strange as I was crap at maths in school and college. I have a good mental arithmetic capacity which served me will when flying.

I love the old I have 11 fingers type numbers trick (gets my kids every time).

Left hand 1,2,3,4,5 right hand 10,9,8,7,6 what's 5+6, bingo I have 11 fingers......

I don't have a mind that retains formulas, but if I know enough variables I can derive a formula from a set of answers to a given problem. I've come up with my own rules for the old formula transformation chestnuts, works a treat every time.

cattletruck

26th Sep 2013, 02:13

I learnt to love complex numbers, that is i squared = -1, which introduced real and imaginary numbers way before all this iphone, ipad craze.

Our lecturer, whom we called Roman Sandles (by removing the real "r" in his surname and adding an imaginary "s"), was awesome at teaching us this branch of mathematics and even showed us some real world application of it too which made it very worthwhile.

Hydromet

26th Sep 2013, 02:20

Was interested but not exceptional at maths at school (had a couple of WW II ex-navigators as maths teachers. Started enjoying maths & numbers a whole lot more when I studied surveying, with teachers who were practicing surveyors.

UniFoxOs

26th Sep 2013, 07:51

I love the old I have 11 fingers type numbers trick

I like that, but I confuse people by counting to 31 - on one hand.

UFO

There are 10 types of people.....

MarianA

26th Sep 2013, 08:22

There are 10 types of people.....Those that know binary,

those that don't know binary,

AND those that realize the joke is in base three.

Vercingetorix

26th Sep 2013, 08:48

I'm very basic as in:

10s, 20s & 12s.

QED or should that be £ S D?

Ho Hum :)

The SSK

26th Sep 2013, 08:49

Is it just coincidence, or are Pi's just round?

Ani fule kno Pi are round

Bread are square

I was good at maths

Except trigonometry

Utterly, hopelessly crap at trigonometry

MagnusP

26th Sep 2013, 08:59

Numbers are OK. It was the stuff like group and set theory that got me interested in maths for maths' sake. Before that, it was engineering mathematics that rang my bell.

Hydromet

26th Sep 2013, 10:17

I like that, but I confuse people by counting to 31 - on one hand.

Taught my daughter that one when she was at school - thought it was a good one .

Rossian

26th Sep 2013, 11:21

....how do you count to 31 on one hand - I have a smartass grand-daughter who needs baffling.

The Ancient Mariner

alisoncc

26th Sep 2013, 11:31

Love numbers. It's the letters I have problems with.

Hydromet

26th Sep 2013, 11:44

....how do you count to 31 on one hand - I have a smartass grand-daughter who needs baffling.

Hand on table, fingers in air...

0 = all fingers off table

1 = little (4th) finger down

2 = little finger up, 3rd finger down

3 = little finger down, 3rd finger down

4 = 2nd finger down, 3rd & 4th fingers up

.

.

.31 = thumb & all fingers down.

dubbleyew eight

26th Sep 2013, 11:47

you are using your fingers as binary markers.

never seen that trick before.

neat.

Binary.

Thumb = 1

Index = 2

Middle = 4

Ring = 8

Little = 16

So it goes

Thumb = 1

Index = 2

Thumb, Index = 3

Middle = 4

Middle, Thumb = 5

Middle, Index = 6

Middle, Index, Thumb = 7

....

All fingers = 31

You can actually get to 1023 using both hands by this method. Right hand as above, left hand:

Thumb = 32

Index = 64

Middle = 128

Ring = 256

Little = 512

dubbleyew eight

26th Sep 2013, 12:05

you may just appreciate my digital clock...

http://i1274.photobucket.com/albums/y421/dubbleyew8/DSCN0113_zps01aa3359.jpg

mikedreamer787

26th Sep 2013, 12:25

I've made it my life's work to derive 42 in

seven and a half minutes instead of seven

and a half million years.

Tricky.

Always been annoyed by Pi, why didn't the buggers start with a different size circle to get it rounded to a reasonable number?

dubbleyew eight

26th Sep 2013, 12:49

hewlett packard's contribution to pi

113)355

355 divided by 113

varies from pi after the 7th decimal place

Sexagesimal (http://en.wikipedia.org/wiki/Sexagesimal), but only to a degree.....

Flash2001

26th Sep 2013, 16:00

Favourite number has to be epsilon. See how you get to it using continued fractions!

After an excellent landing etc...

Fantome

26th Sep 2013, 19:36

G-CPTN

Resident insomniac

he says 69 but that only works due to the chance evolution of inscribed

numerals as they evolved over centuries under the hand of the monks and other MS artists

11 is no where near as appealing as 69

I say 'balls' or oblate spheroids CPTN there are real mathematicians and there are those simpletons like me and you, dare I say, who simply appreciate a little rotundity

at the third stroke it will be . .. . . . . precisely

try murmering that in her ear

Considering infinity as a concept pertaining to endless space, how on earth can you begin to grasp the idea in anything but vague terms that it has no beginning and no end .? Impossible to conceptualise and likewise impossible to help a child to resolve the conundrum.

UniFoxOs

27th Sep 2013, 07:04

how on earth can you begin to grasp the idea in anything but vague terms that it has no beginning and no end

Some marriages seem like that to the participants.

radeng

27th Sep 2013, 10:42

Being a radio engineer, 'i' is current and 'j' is the square root of -1. And I never was any good at maths. Yet I was taught Laplace transforms in 1969, used them for the first time when writing a paper in 1985 and never used them since.......The most maths I've used on a regular basis is in solving simultaneous and quadratic equations.