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meatball893
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#5861
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#5861
(Original post by Simplicity)
Was discussing bad notation in a tutorial with the lecturer today.

Hmm, that just seems like god awful notation. What Mathematical object is that?

Literally, that is the worst notation I have ever seen.
It was in the proof for the Bolzano-Weierstrass Theorem for complex sequences.
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IrrationalNumber
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#5862
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#5862
I haven't come up with a way of proving that the compact linear operators are a closed subset of the bounded linear operators without invoking some horrible notation like that.
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SimonM
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#5863
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#5863
(Original post by IrrationalNumber)
I haven't come up with a way of proving that the compact linear operators are a closed subset of the bounded linear operators without invoking some horrible notation like that.
I think by being careful you can WLOG the nasty notation out.
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meatball893
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#5864
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#5864
(Original post by SimonM)
I think by being careful you can WLOG the nasty notation out.
I love the use of "WLOG" as a verb. Excellent
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Jake22
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#5865
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#5865
Talking of WLOGing* out notational nightmares, one of my favourite passages from Rotman (regarding the spectral sequences arising from the two canonical filtrations of a bicomplex):

'We have created notational monsters
{}^IE^r_{p,q} and {}^{II}E^r_{p,q} (they could be worse; one corner is still undecorated) but the next proposition will replace them with something less ugly.'

In fact, in practice they can be worse since I have seen people talking about morphisms of spectral sequences where one or more arises from a bicomplex thus one does indeed need to 'decorate' the lower left hand corner leaving the poor reader the job of keeping track of five indices.

*Great phrase!
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Jake22
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#5866
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#5866
(Original post by tommm)
Official "Funniest Use of Subscripts in Lectures" Award, Part IA of the Mathematical Tripos 2010/11:

3rd place: \mu_2 (Grimmett)

2nd place: y_i (Siklos)

1st place: b_j (Saxl)
I'll bite - I don't get 'mu two'
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SimonM
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#5867
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#5867
(Original post by Jake22)
I'll bite - I don't get 'mu two'
Mewtwo - Pokemon
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around
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#5868
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#5868
I don't get y_i.
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Oh I Really Don't Care
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#5869
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#5869
(Original post by around)
I don't get y_i.
Pronounce it.
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Jake22
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#5870
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#5870
(Original post by around)
I don't get y_i.
Normally notated as 'why aye', it is a common phrase in the North of England loosely translating as 'yes' but can be used generically as a form of conversational punctuation.

e.g. why-aye-man-pet
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Simplicity
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#5871
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#5871
I don't get b_j

Are you mean't to pronounce the b in a special way or something?
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IrrationalNumber
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#5872
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#5872
(Original post by Simplicity)
I don't get b_j
This doesn't surprise me
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qgujxj39
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#5873
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#5873
(Original post by IrrationalNumber)
This doesn't surprise me
hahahahahahahahahahahahahahahaha ha
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qgujxj39
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#5874
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#5874
(Original post by around)
I don't get y_i.
It helps that I know a guy in lectures who has a reasonably strong North-East accent.
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SimonM
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#5875
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#5875
Anyone given up anything interesting for Lent?
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Oh I Really Don't Care
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#5876
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#5876
(Original post by SimonM)
Anyone given up anything interesting for Lent?
Yeah, abstaining.

When does it start?
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SimonM
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#5877
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#5877
(Original post by DeanK22)
Yeah, abstaining.

When does it start?
Didn't think you had a choice about that

Started on Wednesday...
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Hedgeman49
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#5878
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#5878
(Original post by Simplicity)
I don't get b_j
Instant classic.
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Simplicity
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#5879
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#5879
(Original post by SimonM)
Anyone given up anything interesting for Lent?
Ain't you a socialist?

You must be a atheist then?
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majikthise
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#5880
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#5880
(Original post by Simplicity)
Ain't you a socialist?

You must be a atheist then?
Eh?
Take a look at South America.
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