Late last night, riding the wave of a full day working through the last section of the 1960 School Mathematics Study Group module (unit 23), Introduction to Matrix Algebra (
see page 219) [Frank Allen, et al], I was experiencing a kind of elation, what psychiatrists might robotically refer to as "a manic state."
I was very enthusiastic about the representation of quaternions as 2X2 matrices. This morning I woke up refreshed and curious, since, unlike an alcohol binge, a manic episode did not leave me with a hangover.
Following my curiosity, I put my pencil and paper work down for a moment, then uncharacteristically fired up the computer before noon to search the Interwebs to try to make sense of the apparent isomorphism.
Elsewhere, when I saw quaternions, they were in the form q = {R, i. j, k}, a real number added to 3 complex numbers, where i, j, and k were different "directions" or rotations ... that is,
i,
j, and
k were like the imaginary i in the Complex Plane, but quite different just the same. That is, i, j, and k are not "imaginary numbers in the complex plane," but
something different, "quaternion imaginary". Thus, the quaternion in this form has four dimensions, one real and the other three?.
(see chapter 1 of
Naive Lie Theory [or not ... no need to follow me into this ... you can view a half hour
visualization-explanation at your leisure ... meanwhile, I formally apologize for the chaotic nature of this post ...] )
While looking through some materials from Library Genesis which would have been inaccessible otherwise (books far too expensive to even consider), I saw that I was trying to make sense of the matrix representation, and wanted to relate the 1960 SMSG text notation to what is used in the q = {1, i, k, j} form. The Appendix of the book I am just about through presents quaternions in the guise of matrices exactly as described in this rare clue in a post here:
Isomorphism of quaternions with a matrix ring over real numbers. In the appendix (research exercises) of the Frank Allen 1960 experimental high school text, instead of the labels I2, I, K, J, it uses I, U, V, W.
Also, where quaternion q = a + bi + cj + dk
= matrix( [ [a + bi, c + di], [-c + di, a - bi] ]), where z = a + bi, w = c + di, and the other two are the negative conjugate of w and the conjugate of z,
the matrix in the Allen text is matrix( [ [x + yi, u + vi], [-u + vi, x - yi] ]).
That is, z = x + yi, w = u + vi.
So, I have figured out that in the classical form, this maps to quaternion q = x + yi + uj + vk.
The notation begins to make sense to me, and I see the isomorphism, but there is still such great potential for confusion that one really has to have their head together to approach this material; that is,
one mustn't panic. One must find a way to stay calm and spell things out to oneself, at ones own pace. Certain others may cause great confusion and havoc. How to reduce the havoc and confusion in oneself? That's the tricky part. You can see just from my brief description how "i" is used in two different ways [not the same i], and "I" is used in different ways with the different systems. Add on top of this that no one but the one seeking to understand cares about such things, and you have a perfect recipe for mental isolation bordering always on the brink of collapse and disintegration.
While I do not believe in any "supernaturals," what the natives of North America referred to as "the inivisibles," I do trust the authors of the SMSG movement, so I will try to temporarily forget the form in which quaternions were first developed (by William Rowan Hamilton around 1835: q = a + bi + cj + dk), and focus primarily on considering quaternions as an algebra of matrices. There must be a method to their madness, a reason why they believe quaternions are more easily presented in the guise of 2X2 matrices with complex numbers as entries.
Now,
the Lovecraft Connection: It was in these moments that I reflected upon something I read about the life of HP Lovecraft, how he experienced some kind of deep psychological despair at the time he might have been thinking of pursuing higher education, and I suspect that the root of this despair had something to do with similar experiences of what might be described as "a feeling of inevitable defeat." (still in the process of finding a better way of describing this particular species of
depression).
It is a feeling that one may only be able to fathom such an extremely small degree of mathematics, and even then, only with particular notation and form one is comfortable with.
This led me to search for information about HP Lovecraft's struggles with higher mathematics:
Whipple Van Buren Phillips' death in 1904 greatly affected Lovecraft's life. Mismanagement of his grandfather's estate left his family in such a poor financial situation they were forced to move into much smaller accommodations at 598 (now a duplex at 598-600) Angell Street. Lovecraft was so deeply affected by the loss of his home and birthplace he contemplated suicide for a time. In 1908, prior to his high school graduation, he suffered a nervous breakdown and consequently never received his high school diploma. S. T. Joshi suggests in his biography of Lovecraft that a primary cause for this breakdown was his difficulty in higher mathematics, a subject he needed to master to become a professional astronomer. This failure to complete his education (he wished to study at Brown University) was a source of disappointment and shame even late into his life. Wow ... I remember my nervous breakdown in the last year of high school. I ended up graduating, but it was just the beginning of something horrid ... and, even all these years later, even after having completed a difficult major that entailed much higher mathematics than I faced in high school, I am still determined to master the material that I suspect played a part in my mental breakdown.
I have been careful in my approach, and I refuse to allow myself to be overwhelmed or intimidated by "post graduate material" that is incomprehensible to me. I am determined to take things in stride and grapple at a level at which I can actually comprehend and digest what I am studying.
With this post, I wanted to bring attention to this "adolescent mental collapse associated with difficulties with mathematics," as I think it would interest Holden that I actually have this in common with Lovecraft, although I have been fortunate enough to keep at it with persistence throughout my life, minus the 13 year drinking binge after graduating from Rutgers University in 2002.
So, there is something you (Holden) and Lovecraft and myself have in common, although we each deal with the psychological challenges in our own peculiar ways. Lovecraft incorporated weird mathematics into his stories, such as Dream in the Witch House, whereas I am obsessed with mastering the curriculum that was supposedly presented to me during a period of my life when I was suppressing a mental collapse. I think that this might have something to do with why I lack confidence in "writing proofs."
While I am no avid reader of HP Lovecraft, from the handful of stories I have read, I do, at times, feel like a protagonist in such a story, not so much having to do with super-intelligent squid-like extraterrestrials who were here before the earliest [indigenous] humans, but more having to do with the subtle art of not allowing oneself to be driven insane by one's own brain.
While there is our evident connection in our mutual high regard for the clues left to us in the writings of Arthur Schopenhauer, I believe that our destinies might also have some kind of intersection having to do with our sincere and raw CURIOSITY about the discipline of mathematics. In sharing the details of my obsession with studying math(s), it is my hope that you will be better able to incorporate [and HONOR] your own interest in mathematics in the midst of your torturous commitments to your employer which leave you feeling drained, defeated, and "disintegrated."
In my most honest moments, I think that the breadth and scope of mathematics overwhelms me, and if I continue to peck away at it, I do so with my tail between my legs.
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an aside: an uncanny coincidence? While trying to come up with a title for this thread, when I finally settled on "Primary Cause for Lovecraft's Breakdown Was His Difficulty in Higher Mathematics," I noticed that this uses exactly the maximum limit of permitted length! Do you believe in ghosts? Maybe Schopenhauer did entertain the idea, as may be discerned from reading parts of
On the Will in Nature.
Bertrand Russell reports that Schopenhauer told people that certain of the paragraphs were written by the "Holy Ghost." I can attest to this, as I have vivid recollections of Schopenhauer coming right out and stating this - although I always suspected it was written "tongue in cheek."
Also: "Moreover, Schopenhauer had experienced animal magnetism and ghosts; he also had a sense of being mildly clairvoyant." from
The World as Weird (Schopenhauer Workshop)
The reason for mentioning "ghosts" is that I can't help but feel the guiding hand of this
weird mixture of mathematicians and "educators" who were involved in the SMSG [
academic think tank] project of the 1960's financed by the United States
National Science Foundation.