P. V. Poluyan, Krasnoyarsk, Russia Numbers in Space
I One of the Wolfgang Pauli's scientific texts begins with a remarkable
phrase: "Let us introduce, as usual, material coordinates X_{k}
for space and imaginary coordinate X_{4}=
iCt for time and consider
Lawrence's transformations..." (W.
Pauli. Works on Quantum Theory. M. "Nauka", 1977, see article
"About Mathematical Matrix Theory Of Dirak", p. 5, "Lawrence's
Transformations of Dirak's Wave Functions", p. 233). The phrase
"as usual" can be considered here as a kind of a witty intellectual
provocation, which means that the abovementioned procedure can be performed not
"as usual", but in "an unusual way". But how?
It is not difficult to say: we try to maintain the material coordinate
for time and consider 3 spatial coordinates imaginary. Then Minkowsky's
fourdimensional pseudoeuclidean continuum will transform into some unusual
variety, which we shall call "Quaternized timespace". The appearance of the term "quaternion" here is evident: it is
easier to present 4 numbers, expressing coordinates (one material, three 
imaginary) as quaternion. But quaternion is algebraic numbers, and
fourdimensional spacetime is continuum. If it is so, is there enough reasoning
to make them correspondent? We shall try to answer this question later and for
the present we shall consider quaternion timespace as some pure logical
construction, which can be seen as a whole and analyzed in particulars. It is
also important to mention that the term "space" in modern science is
not connected any more with distance measuring, and nothing disturbs us to make
a fourdimensional space, where a measure in [t] is put on the axis. But as time
is of physical character, which reflects the important aspect of reality, not
formal mathematical qualities of the madeup construction, but its physical
interpretation will be of greatest interest to us in this article. The fact that the algebra of quaternions is not commutative leads us to
the idea that an abstract object, madeup this way, is directly connected with
quantummechanical peculiarities of the physical world. But let us consider
quaternion timespace as if we do not know anything about quantum mechanics. In
other words, we shall try to preserve the classical notions of time and space. Thus we have a fourdimensional variety, where the material axis is pure
time, and the rest three ones are spatial coordinates transformed into imaginary
temporal axes. While building Minkowsky's fourdimensional pseudoeuclidean
continuum, all the coordinates were measured in [x]
as a result of multiplication of a temporal coordinate and coefficient C
which is velocity of light [m/s].
That is why in our quaternion timespace a 'onemeasurement' is achieved in
analogical way: Multiplication of imaginary spatial coordinates and some
coefficient S, measured in [s/m]. Sometimes it is considered for the interpretation of Minkowski's
continuum that the shift of t into x
with the help of the coefficient C
is of no importance this is a strange illusion, because time cannot be
physically equal to the temporal extension. If we take C
for a unity, measure [t] and [x] will not disappear because of that. The same is with the
statements like "only spatialtemporal interval is truly important",
"space and time are united in their nature" and so on, which are more
philosophic statements than physical. That is why it is extremely important that
we choose a different onemeasure system in our quaternion timespace: imaginary
spatial coordinates must be multiplied by some coefficient S,
measured in [s/m]. And again it may seem that nothing special happens because it
is just "the reverse velocity of light". But the changing of the
coefficient, which is not important in mathematical sense, leads to great
changes in physical sense. The reverse velocity of light 1/c,
as real physical quantity cannot be an unknown coefficient, while the scale of
reverse velocities is irregular. In classical notion velocity is a ratio, where
the numerator is the distance segment, and the denominator is time period, time
being independent variable quantity. Then dealing with 'reverse velocity', where
the numerator and the denominator exchange their places, there appears not only
new, but also irregular measuring scale: 1[m/s] = 1[s/m], 2[m/s] = 1/2 [s/m], 3 [m/s] = 1/3
[s/m], 4 [m/s] = 1/4 [s/m], etc. Standard mathematical analysis and pseudoeuclidian space do not
contradict each other just because space does not possesses inner metrics (as it
was underlined by Rieman), in other words a unity can be as big as possible, it
is not set as some inner measure unity of distance. In our case, velocity of
light C, which plays the part of the
coefficient by the imaginary unity, is quite a concrete physical quantity, the
velocity of electromagnet waves. We can imagine it as some unity only
relatively. For mathematical characteristics of Minkowski's spacetime it is not
essential, but in the real world this unity C is used to characterize the unique physical process, that is the
change, which is mathematically harmless, can be approved physically. It seems that due to this reason quaternion timespace cannot be an
analogue of the fourdimensional continuum. But it easy to find the way out, if
we do not consider S to be 'reverse
velocity', but some coefficient measured in [s/m]. Let us turn from mathematics to physics. If coefficient C
in Minkowsky's pseudoeuclidean continuum is a concrete physical quantity 
velocity of light, which has in different measurement system concrete numerical
realization, in our quaternion timespace coefficient S
must be some physical constant quantity, different in its nature from velocity
of light, but having a measurement [s/m]
 a reverse one to the measurement unit off velocity. We can offer a combination
of constant h/e^{2} to suit
this new constant, where h is Plank's
constant, and e is the charge of an
electron. It is well known that this combination as well as C
is included in the expression of the nonmeasured constant of thin structure 1/a
= ħC/e^{2}
= 137.0306... (ħ
is Plank's constant divided into 2p
 hh/2p).
I believe that is true, that quaternion timespace is a mathematical expression
of the real aspect of microphysical reality, where the constant S
= h/e^{2} measured in [s/m]
is as important as velocity of light for Minkowsky's fourdimensional continuum. Of course, the author can be reproached for a kind of arbitrariness
because it is possible to construct the measure [s/m] from the constants in some other ways (e.g., by using the
gravitational constant). The only reason, by which the author is motivated here
is the desire to find the logical connexion between the quantum and relative
physics, discovering at the moment only formal deep mathematical connexion
between the global spatialtemporal picture of the world and microphysical
quantum reality, while these constants are accepted to be used to express a
sizeless constant of a thin structure. The logical sense of nonmeasured
constant of thin structure can be seen in the fact that it shows the
correspondence between Minkowsky's continuum and quaternion timespace. I
believe Wolfgang Pauli, who insisted on theoretical grounding of physical status
of this mysterious number 137.0306... meant something of that kind. But formal arguments are not enough here. We must show the physical
essence to discover correspondence, that is to discover the connections between
the velocity of rectilinear forward movement C and constant S,
the meaning of which is not quite clear yet. S=h/e^{2}
is a combination of empirical constants measured in [s/m], we include it in some mathematical structure, but that has
not cleared up its meaning. In classical physics velocity is a quantitative measure of forward
movement, which binds spatial and temporal characteristics of motion as
rectilinear forward movement. If constant S
is included in Quaternized timespace, it means that it must be also understood
as an expression of some aspect of motion, where spatial and temporal
characteristics are bound somehow. Moreover, one of the most important qualities
of Minkowsky's continuum is Lawrence's transformations, which lead to that law
of adding velocities while leaving onemeasure system for the other gives us
maximum meaning for the rectilinear forward movement. It would be logical to suppose that in quaternion timespace there is
also an analogue of Lawrence's transformations, which will let us interpret
constant S as an invariant and limit
in adding some quantities. Thus, the matter should look like a case of using 2
measures, where on the complex plane by means of pseudoeuclidean way one
temporal and one spatial axes are being bound.
For Minkowsky's continuum an imaginary axis will be iCt  a temporal axis, for
quaternion timespace  a spatial axis iSx.
While dealing with twodimensional case the matter does not seem difficult, as
we do not consider noncommutability (on the other hand, it is discovered that
noncommutability is directly connected with the presence of two more imaginary
spatial coordinates). While velocity of light C is
nonclassical limitation of maximum velocity (velocity of signal expansion over
some distance cannot be endless), correspondently, constant S
also does not let the ratio Dx/Dt take endless meanings. But S
is a limit for "reverse velocity", and increasing of Dt/Dx means at the same time decreasing of ratio Dx/Dt. That leads us to the thought: "zero velocity" is as
unattainable as endless velocity. Nevertheless, in case of a simplified 2measured complex notion of
quaternion timespace, it is still not clear what measures they should be, what
is the physical meaning of "measure system" in this case? We are
expected to answer these questions. While S is some coefficient of
proportionality between timemeasurement t[s] and spacemeasurement x[m],
constant S as the independent
parameter expresses some aspect of motion. But while the quantity measurement
for forward rectilinear movement is the classical notion of velocity V[m/s]
and its nonclassical limit C, this
new constant must be a nonclassical limit of some classical movement
measurement, which is a forward movement, nevertheless. We suppose that the form
we need is rotation. There are microphysical and mathematical premises to connect the
mentioned quantity with nothing else, but rotation. In physics of elementary particles the existence of the socalled
isotopetransformations, which are completely the same as ordinary rotations, is
experimentally discovered. Werner Geisenberg, accounting basic symmetry groups,
places some special group next to Lawrence's group, it is the group explored by
Pauli and Gucci, which according to its structure corresponds to the group of
threedimensional special rotations. It is isomorphous to this group and reveals
itself in appearance of the quantum number, which was discovered empirically and
which characterizes elementary particles, it is called "isospin" (W.
Geisenberg, "Quantum Theory and Material Structure" Physics and
Philosophy. Part and the Whole.
Moscow: Nauka, 1990, p. 103). Ratios,
which are the result of isotopeinvariety, are observed to calculate to within
amendments, the quantity of which is determined by the ratio e^{2}/hC. It is
noted in the textbook that "isotopeinvariety means a special symmetry of
great interactions, which is not connected with general qualities of space and
time. Though isotopeinvariety is
discovered quite well experimentally, the qualities of symmetry connected with
it do not follow from this theory, and the nature of these qualities is not
discovered yet" ("Isotope
Spin" Physics Encyclopaedia, Moscow, 1962, Vol.2, p.143). Mathematicseducated readers have, probably, understood that that object
which is known here as quaternion timespace is quite wellknown Klifford's
algebra of the fourdimensional vector space. Its applicability in physics has
been shown several times, as well as for isospins. But the usual attitude
towards such applicability of vector algebra in nonclassical physics is quite
skeptical. What has been done in that respect in France (works by G. Gusanova,
C.R. Acad and others) is regarded usually as the result of specific
interrelation of quantum physics. Thus, the real aim of the work the author proposes to discus here is
grounding of the fundamental importance of vector algebra for studying the
Universe. The author believes that
quaternion timespace is a logically necessary element of the four dimensional
spacetime (Clifford's algebra determined in the field of hyperreal numbers for
the space with time measure system), which closes spatialtemporal structural of
the universe, and the division of the sizeless quantity into two measurable
constants determines that fragment of the universe where physical processes take
place in time. The author attempts
to show that vector algebra is not just a specific mathematical language to
reform the wellknown physical data, but, on the contrary, it appears so
logically and naturally on the basis of the classical Decartes space pseudoeuclidian
Minkowski's continuum is built. The applicability of the mentioned approaches is doubted by many thanks
to the standard notions of limits and infinitesimal. The author thinks that
while the logical noncontradictoriness of the nonstandard analysis has already
been proved by Abraham Robinson's works, nothing disturbs us to rerealize the
standard notions of interrelations infinitely big numbers and infinitesimal.
This is what happens, when the fourdimensional spacetime is closed with
quaternion timespace into one whole unity. And this really happens.
