Titles composed entirely of math symbols I apologize for burdening MO with such a vapid, nonresearch question, but
I have been curious ever since
Suvrit's popular October 2010
Most memorable titles MO question
if there were any "$E=mc^2$-titles," as I think of them—how Einstein in retrospect might have entitled his 1905 paper
(instead of
"Zur Elektrodynamik bewegter Körper"!)—paper/book titles composed entirely of math symbols.
There are two close misses in the responses to that MO question:
Connes et al.'s
"Fun with $\mathbb{F}_{1}$",
and Taubes's
"${\rm GR}={\rm SW}$: Counting curves and connections."
The only title entirely composed of math symbols with which I'm familiar is the delightful book A=B, by Marko Petkovsek, Herbert Wilf, and Doron Zeilberger.
Can you identify others?
Please interpret this question in a weekend-recreational spirit! :-)
 A: Close but no cigar: On $O_n$, DE Evans
RIMS, Kyoto Univ 16 (1980) 915-927, and its sequel On $_{+ 1}$,
H Araki, AL Carey, DE Evans
J. Operator Theory 12 (2) (1984), 247-26.
$O_n$ (Oh, not zero) is the Cuntz C*-algebra. I thought this was a very clever title at the time.
A: Jacques Roubaud has a book named $\in$, published by Gallimard in Paris 1967. It's not listed on his English wiki page (and is a pain to google if, like me, you've forgotten his name).
Here is a picture of the cover from French Amazon:

A: MIP*=RE
Zhengfeng Ji, Anand Natarajan, Thomas Vidick, John Wright, Henry Yuen.
arXiv Abstract. 13 Jan 2020.

...a negative answer to Tsirelson's problem... our results provide a refutation of Connes' embedding conjecture...

A: $SL_2(\mathbf{R})$ (link)
A: $\Gamma_4=0$
is the subtitle of Jean Cerf's famous lecture notes: Sur les difféomorphismes de la sphère de dimension trois $(\Gamma _{4}=0)$. (French) 
Lecture Notes in Mathematics, No. 53 Springer-Verlag, Berlin-New York 1968 xii+133 pp. 
A: I apologize for a bit of vanity, which, worse yet, is not even a proper example: I nearly published a paper entitled $T^0_2(MSP)=PV_1$, but a referee made me rename it in the final version.
A: Thomas Forster's PhD thesis is called "NF". On his website he claims that this is the shortest title for a Cambrige maths PhD on record. The abstract is also pretty short.
A: $K_1(A,B,I)$ 
S. Geller, C. Weibel, J. Reine Angew. Math. 342 (1983), 12–34. 
$K(A,B,I)$: II
S. Geller, C. Weibel, K-Theory 2 (1989), no. 6, 753-760.
A: $H^4(Co_0;\mathbf{Z})=\mathbf{Z}/24$
A: $\mathcal{C}(A)$
PhD thesis about posets of commutative C*-subalgebras. According to some P.R. agent at the Radboud University, it might be the shortest title for a Dutch PhD thesis, but I am not completely sure whether or not that is true.
A: Not a paper, but Dan Freed's talk 4-3-2 8-7-6 about topological and conformal field theories.
A: ! 
(Title of a talk about the factorial function by Manjul Bhargava at the Clay conference in Paris in the year 2000.)
A: 7 373 170 279 850
A: $K_{i}^{loc}(\mathbb{C})$, $i = 0, 1$, by Nicolae Teleman (link).
A: The monograph $Lx=b$ by Nisheeth Vishnoi (here), on fast ways to solve Laplacian systems.
A: Q (arXiv)     
A: $H=W$
A: Professor Luca and his co-authors are surely fond of this kind of titles:


*

*F. Luca & B. de Weger, $\sigma_k(F_m)=F_n$. New Zealand J. Math. 40 (2010), 1–13.

*F. Luca & F. Nicolae, $\phi(F_n)=F_m$. Integers 9 (2009), A30, 375–400. 

*F. Luca & M. Mignotte, $\phi(F_{11})=88$. Divulg. Mat. 14 (2006), no. 2, 101–106.

*F. Luca & P. Stănică, $F_1F_2F_3F_4F_5F_6F_8F_{10}F_{12}=11!$. Port. Math. (N.S.) 63 (2006), no. 3, 251–260.
A: $R(4,5)=25$
B. D. McKay and S. P. Radziszowski, J. Graph Theory, 19 (1995) 309-322.
The title is also the main theorem.  $R(4,5)$ is a classical Ramsey number (the one most recently determined exactly).
A: I have just noticed that nobody has mentioned so far the paper
714 and 715
by C. Nelson, D. E. Penney, and C. Pomerance.
This paper appeared in the second issue of vol. 7 (Spring, 1974) of the Journal of Recreational Mathematics; it is famous because it was precisely in its pages that the notion of Ruth-Aaron pair was first introduced.
A: Would IP=PSPACE count?
A: McCarthy, Charles A. $c_p.$ Israel J. Math. 5 1967 249–271. 
A: $\Delta=b^2-4ac$, by Jean-Pierre Serre (Math. Medley, Singapore Math. Soc. 13, 1985, 1-10).
A: 210=14*15=5*6*7
I may have the title wrong.  It is about the simultaneous solution of some Pell-like equations.  I will provide more detail as my memory permits. 
Gerhard "Email Me About System Design" Paseman, 2011.07.10 
A: *

*Christopher J. Mulvey, &, Second topology conference (Taormina, 1984). Rend. Circ. Mat. Palermo (2) Suppl. No. 12 (1986) 99–104 (MR0853151)

Yes, this is the title. Just "&". :-)
From Mulvey's homepage: "This paper, presented at the Topology Meeting in Taormina, Sicily in April, 1984, introduced the concept of quantale, outlining the programme of work in the spectral theory of C*-algebras and the constructive foundations of quantum mechanics to which it was expected to contribute. The paper is a slight development of that which appeared in the Tagungsbericht of the Category Meeting at Oberwolfach in September, 1983. It is included here since, although often quoted, it is more difficult to obtain in its published form in the Rendiconti del Circolo Matematico di Palermo. "
A: $H_g^1(K,V)=H_{st}^1(K,V)$
An unpublished manuscript by Osamu Hyodo (who passed away untimely).
A: $\int_x^{hx}(g^*\alpha-\alpha)$ (by Kedra and Gal)
http://arxiv.org/abs/1105.0825
A: "Pi" (I keep "A source book" in parentheses to hide the non-mathematical part), L. B. Berggren, J. M. Borwein, P. B. Borwein (Eds.).
"Z=60", Conference in Honor of Doron Zeilberger's 60th Birthday (this, of course, is influenced by one of my favorite titles "$A=B$").
Removed (following the healthy criticism):
"2012", a 2009 American science fiction disaster movie.
A: $$\left(1+\frac{d}{dz}\right)^{-1}$$
only a preprint, though: http://arxiv.org/abs/1203.3045
EDIT: As of 3 Oct 2016 "This paper has been withdrawn due to an error in the proof of Claim I.3.5"
A: This just in (https://arxiv.org/abs/1703.08768):
$$R(5,5) \leq 48$$
A: Here is $H_\infty\not= E_\infty$, wherein Justin Noel gives an example of an $H_\infty$-structure on a ring spectrum which does not descend from an $E_\infty$-structure.
A: $H_8$, by Jacques Martinet.
$GL_n$, by William Casselman.
Both these articles appear in the a book edited by Albrecht Fröhlich:
Algebraic number fields: L-functions and Galois properties (Proc. Sympos., Univ. Durham, Durham, 1975), pp. 525–538. Academic Press, London, 1977. 
A: *

*Yann Bugeaud, $B'$, arXiv:2209.00275.

