Construction via Dedekind Cuts

blues rock american primitivism, french big band

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Lyrics

[Verse 1]
Picture all the rationals scattered on a line
Draw a blade and slice them cleanly, left and right divide
Every number on the left stays smaller than the right
But the left side has no ceiling, no maximum in sight

[Chorus]
Cut the rationals in two, L and U apart
Left side climbs but never peaks, that's the beating heart
Gap becomes the number now, boundary made real
Dedekind cuts reveal the truth that empty spaces feel

[Verse 2]
Take all rationals below or equal to the three
Right side gets the three and up, partition perfectly  
But when we hunt for square root two, no rational will do
Left gets numbers squared less than, right gets greater through

[Chorus]
Cut the rationals in two, L and U apart
Left side climbs but never peaks, that's the beating heart
Gap becomes the number now, boundary made real
Dedekind cuts reveal the truth that empty spaces feel

[Bridge]
No minimum on the right
No maximum on the left
The chasm holds square root two
A treasure from the cleft

[Verse 3]
Don't search for the missing piece, don't try to fill the hole
The absence is the answer here, the void becomes the goal
Each real number is a cut, a partition cleanly made
The gap itself's the object now, foundation firmly laid

[Chorus]
Cut the rationals in two, L and U apart
Left side climbs but never peaks, that's the beating heart
Gap becomes the number now, boundary made real
Dedekind cuts reveal the truth that empty spaces feel

[Outro]
Mathematics builds on voids
Where nothing becomes all
The cut defines what isn't there
And makes the irrational

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