🚀 go-pugleaf

schumaker wrote:
> 
> >> > > >Actually, you only need 2 points to define a plane: a point on the
> plane and
> >> > > >a normal vector.
> >> > >
> >> > > Sorry to quibble, but...
> >> > >
> >> > >    A VECTOR IS NOT A POINT!!!!
> >> > >
> >> > > Now back to our regular program.
> >> >
> >> > Points are vectors.
> >> > ^^^^^^^^^^^^^^^^^^
> >>
> >> Sorry, but I must take offense here.  A point in Cartesian space has three
> >> aspects [X,Y,Z].  A vector requires a direction, and depending on how
> sticky you
> >> are, probably a length.  This implies 6 independent aspects.  Result;  A
> plane
> >> requires 3 points.  Always.
> >
> >You're wrong. A vector is any quantity with any given number of dimensions.
> The
> >number 5 is a vector, called a scalar.  The vector [x,y,z] can refer to a
> position
> >vector (point) or direction vector.
> >
> >I suggest you take some math courses before you try to explain such basic
> concepts.
> 
> your wrong a vector and a scalar are completely different.  5 is not a vector
> called a scalar it is a scalar.  Look up in any physics book and a scalar is
> defined as any given value.  5,10,3.116, any # is a scalar but a vector is
> number WITH direction ie 5 at 13degress is a vector.
> 
> matt

you told not all the truth: not every number is a scalar. If it transforms 
like det(A)N it is a pseudo scalar. All these sweet, little Objects are called 
tensors or pseudo-tensors of rank n. A scalar is a tensor of rank 0, a vector
of rank 1, ...

Have a nice day
Michael