Rank-3 scale theorems: Difference between revisions

Inthar (talk | contribs)
Inthar (talk | contribs)
Line 53: Line 53:
Since M_b is a mos mode, there is a k-step within [0, n_0] that has the slope which is just smaller than (F(n_0)-1)/n_0 (1). Similarly, there is a k-step within [n_0, n] that has the slope which is just bigger than (F(n_0)+1)/(n-n_0). These slopes are "two or more steps away" from each other, which is a contradiction. (State this more formally)
Since M_b is a mos mode, there is a k-step within [0, n_0] that has the slope which is just smaller than (F(n_0)-1)/n_0 (1). Similarly, there is a k-step within [n_0, n] that has the slope which is just bigger than (F(n_0)+1)/(n-n_0). These slopes are "two or more steps away" from each other, which is a contradiction. (State this more formally)


===== LQ is equivalent to floor-LQ in case of 2-step scales =====
===== LQ is equivalent to floor-LQ in case of 2-step scales (WIP) =====
A floor-LQ scale ''S'' is LQ since the graph of F(x) = floor(b/a*x) has the desired lattice points: the lattice points are
 
floor({(a,b)t : 0 <= t <= 1}) = floor_x(floor_y({(a,b)t : 0 <= t <= 1})) = floor_x([graph of floor(b/a*x)]) (*).
 
Conversely, if a 2-step scale ''S'' is LQ, floor({(a,b)t : 0 <= t <= 1}) gives you the graph of floor(b/a*x) (plus the vertical lines) when you connect the dots. This follows from the same equation (*).


==== MV3 Theorem 1 (WIP) ====
==== MV3 Theorem 1 (WIP) ====