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    (Original post by secretmessages)
    What kind of labs? What topic? :holmes:

    Time to go :emo:. Bye guise.
    IT... databases at the minute. :facepalm2:

    Me too, :ciao:
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    (Original post by spikeymike)
    IT... databases at the minute. :facepalm2:

    Me too, :ciao:
    Back :sexface:

    In AI
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    I'm stuck bored in a lecture doing the fetch execute cycle... with boxes as memory and paper as data. :facepalm2: Something like that, I have no idea what's going, he's overcomplicating the whole cycle.

    I made progress to my scripting in this time though. :ahee:
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    Scripting is done. :sexface: Small report to write... :blah:

    Do you like? :sexface:
    http://www.thestudentroom.co.uk/show....php?t=1185899
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    (Original post by spikeymike)
    Can you spot what I've done to the network providers?
    :no:
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    (Original post by secretmessages)
    :no:
    :facepalm2:

    Spoiler:
    Show
    The colour represents the actual network providers logo/name colour. :awesome:
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    (Original post by spikeymike)
    :facepalm2:

    Spoiler:
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    The colour represents the actual network providers logo/name colour. :awesome:
    :dontknow:

    What about Tesco mobile :sexface:
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    What absolute rubbish. Remember I was complaining yesterday about not being told the answers to our assignment? They've just been posted up online, but the question I am interested in says "to be added later". FFFFFFUUUUUUUUUUUUUUU-
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    (Original post by secretmessages)
    :dontknow:

    What about Tesco mobile :sexface:
    I will add the lesser known networks later.

    (Original post by secretmessages)
    What absolute rubbish. Remember I was complaining yesterday about not being told the answers to our assignment? They've just been posted up online, but the question I am interested in says "to be added later". FFFFFFUUUUUUUUUUUUUUU-
    :facepalm2: :facepalm:
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    hey spikey did you get that scripting thing sorted? Sorry went out and totally forgot to check back in my bad!

    Still on formal methods tonight i really dont know my maths ,

    Using quantifiers, give formal expressions for the following statements, where p, q and r are all
    natural numbers. Do not use the divide operator /

    p is a prime number;

    cant work out how to display a prime number with out using divide or modulus!
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    (Original post by mprules)
    hey spikey did you get that scripting thing sorted? Sorry went out and totally forgot to check back in my bad!
    Aye... I didn't have the patch package hence patch command not found. :facepalm2:
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    (Original post by mprules)
    hey spikey did you get that scripting thing sorted? Sorry went out and totally forgot to check back in my bad!

    Still on formal methods tonight i really dont know my maths ,

    Using quantifiers, give formal expressions for the following statements, where p, q and r are all
    natural numbers. Do not use the divide operator /

    p is a prime number;

    cant work out how to display a prime number with out using divide or modulus!
    That's a relatively easy one. :sexface:

    p\text{ is prime} \Longleftrightarrow p\in\mathbb{N}\backslash\{1\}\te  xt{ and }(n\mid p, n\in\mathbb{N} \Rightarrow n=1\text{ or }n=p)

    I assume the divisor operator is allowed. You could also define the set of primes:

    \mathbb{P} := \{p\in\mathbb{N}\backslash\{1\} : n\mid p, n\in\mathbb{N} \Rightarrow n=1\text{ or }n=p\}
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    (Original post by Dez)
    That's a relatively easy one. :sexface:

    p\text{ is prime} \Longleftrightarrow p\in\mathbb{N}\backslash\{1\}\te  xt{ and }(n\mid p, n\in\mathbb{N} \Rightarrow n=1\text{ or }n=p)

    I assume the divisor operator is allowed. You could also define the set of primes:

    \mathbb{P} := \{p\in\mathbb{N}\backslash\{1\} : n\mid p, n\in\mathbb{N} \Rightarrow n=1\text{ or }n=p\}
    DOH!! totally got the divisor and divide operator mixed up!!!


    Edit , how would you write that in english?
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    p is prime if and only if: p is a natural number other than 1, and if n (some natural number) divides p, either n = 1 or n = p.

    A slightly more succinct way of phrasing it would be that p is prime if it has exactly two positive divisors, but that's harder to write in symbols.
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    God i wish i knew maths cheers dude!!!
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    (Original post by Dez)
    p is prime if and only if: p is a natural number other than 1, and if n (some natural number) divides p, either n = 1 or n = p.

    A slightly more succinct way of phrasing it would be that p is prime if it has exactly two positive divisors, but that's harder to write in symbols.
    I cannot figure out this TSR reduced latex stuff. Is there a manual somewhere?

    Anyway, why not (substitute A for 'for all', E for 'there exists', N for the natural number set, ^ for conjunction and ~ for negation)
    A p in the set of N, p is prime <=> ~E q,r in the set of N, (q*r = p) ^ (p, q =/= 1)

    Edit:
    \forall p\in\mathbb{N}. p\text{ is prime}\Longleftrightarrow\neg\ex  ists q, r\in\mathbb{N}.(qr = p) \wedge (p, q \not= 1)
    Yeah! That was a huge trial and error session :facepalm2:
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    (Original post by Chrosson)
    I cannot figure out this TSR reduced latex stuff. Is there a manual somewhere?

    Anyway, why not (substitute A for 'for all', E for 'there exists', N for the natural number set, ^ for conjuntion and ~ for negation)
    A p in the set of N, p is prime <=> ~E q,r in the set of N, (q*r = p) ^ (p, q =/= 1)
    He's called Dez. :lol:

    (Or just quote his post to see how he's done it) :ninja:
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    (Original post by spikeymike)
    He's called Dez. :lol:

    (Or just quote his post to see how he's done it) :ninja:
    Indeed, but he doesn't have the 'for all' or the 'there exists' symbols.

    Hmm.
    Test: \forall \exists

    Edit: :awesome: Aha!
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    (Original post by spikeymike)
    He's called Dez. :lol:

    (Or just quote his post to see how he's done it) :ninja:


    :awesome:

    Being a Maths student I'm rather prone to writing stuff in LaTeX, my final year project can't be submitted in any other format in fact. I've attached a useful crib sheet though. I also have a manual from my department but it's too big to attach to a TSR post and I can't be bothered uploading it anywhere else. :p: Though it's mostly about formatting actual TeX documents, rather than inline usage on a forum, so it probably wouldn't be very useful.

    Also like I said before, we mathematicians seldom use symbols in such density, words are generally (a) less confusing, and (b) easier to remember. I guess going all-symbols is more useful for you CompSci types, but when your primary form of verbal communication is a blackboard, words generally make life a lot easier.
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    I like words, words make sense! Symbolising everything just leads to reading the same sentence over and over till it eventually makes sense
 
 
 
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