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From: BURT on 1 Apr 2010 19:45 Directions are: Up down Right left Front back When we move through space we are moving in a 6 directional space grid in only 3 of these directions. Mitch Raemsch
From: Danny73 on 2 Apr 2010 00:43 On Apr 1, 7:45 pm, BURT <macromi...(a)yahoo.com> wrote: > Directions are: > > Up down > Right left > Front back > > When we move through space we are moving in a 6 directional space grid > in only 3 of these directions. > > Mitch Raemsch But here on the three dimensional earth grid it is 6 directions --- North,South,East,West,Skyward,Earthward. ;-)
From: Danny73 on 2 Apr 2010 01:02 On Apr 2, 12:43 am, Danny73 <fasttrac...(a)att.net> wrote: > On Apr 1, 7:45 pm, BURT <macromi...(a)yahoo.com> wrote: > > > Directions are: > > > Up down > > Right left > > Front back > > > When we move through space we are moving in a 6 directional space grid > > in only 3 of these directions. > > > Mitch Raemsch > > But here on the three dimensional earth grid it > is 6 directions --- > North,South,East,West,Skyward,Earthward. ;-) Or on the earths open seas' 3 dimensional grid -- Port,Starboard,Bow,Aft,Skyward,Davy Jones's locker.
From: Rob Johnson on 2 Apr 2010 05:16 In article <cfb6bb9b-9174-4768-ad03-ef2aa9ee7a5a(a)x12g2000yqx.googlegroups.com>, BURT <macromitch(a)yahoo.com> wrote: >Directions are: > >Up down >Right left >Front back > >When we move through space we are moving in a 6 directional space grid >in only 3 of these directions. Those are three directions and each direction has a positive or negative coefficient. However, 2-forms in 4 dimensions do have 6 directions. In R^3, all k-forms can be embedded in R^3. The 0-forms and 1-forms can be mapped directly to constants and vectors. 2-forms, such as rotations, have 3 dimensions, (dx^dy, dy^dz, dz^dx) and can be mapped to vectors (dx^dy -> dz, dy^dz -> dx, dz^dx -> dy), and 3-forms, like volumes, can be mapped to constants (the coefficient of dx^dy^dz). In R^4 and higher, there are k-forms that cannot be embedded into the base dimension. For example, the 2-forms in R^4 are 6-dimensional: dx^dy, dy^dz, dz^dw, dw^dx, dz^dx, dw^dy. Rob Johnson <rob(a)trash.whim.org> take out the trash before replying to view any ASCII art, display article in a monospaced font
From: Igor on 2 Apr 2010 07:02
On Apr 1, 7:45 pm, BURT <macromi...(a)yahoo.com> wrote: > Directions are: > > Up down > Right left > Front back > > When we move through space we are moving in a 6 directional space grid > in only 3 of these directions. > > Mitch Raemsch But sometimes, the directions go round and round (polar coordinates), or form open curves (hyperbolic coordinates). |