
A parabolic analog of the arbelos, from [54] 

Before 


Giving a talk at a meeting of the 


After 

MILNOR WINS THE 2004 STEELE PRIZE FOR EXPOSITION 


FOOTNOTE TO MILNOR'S "DIFFERENTIAL TOPOLOGY 46..." 


NEW AND NOTEWORTHY 3 DECEMBER 2014
* Link in [57] to Proceedings of Ramanujan 125; links in [xliv], [xlxiii], [xlxiv] to papers of Berndt, Kim,
Phaovibul, Zaharescu on "Sondow's conjecture"; changed some book links to doi; title for [63]; updates of publication data
for [39] and [49]; link to slides for my upcoming talk on Ramanujan; link in [xixii] to Matiyasevich's paper on RH citing
[6] and [17]; link in [xlxi] to Wiki page on my solution to Landau's problem on zeta(s); link in [xlx] to Waldschmidt's "Transcendental
Number Theory: recent results and open problems"; publication data for [57] "Ramanujan, Robin, highly composite numbers, and
the Riemann Hypothesis" and [7] "Formulas for pi(n) and the nth prime"; link to new paper [66] with Allouche; update of [xlii]
and [II] for Finch's book; reference in [4] to Chinese translation; link in [xlix] to paper citing [37]; link in [XIV] to
new book "Neverending Fractions, An Introduction to Continued Fractions"; corrected links in [xix] and [xlvi] to Stefan Kraemer's
website on Euler's constant and Hamza Khelif's website on the parbelos [54]; expanded title of [47]; links in [32] and [48]
to Zbl reviews; DOI for [62]; link at bottom to my papers on Microsoft Academic Search; link in [47] to version of "Gauss
and the eccentric Halsted" with 8 portraits; link in [62] to new version; link in [xlviii] to Carlos Rivera's Prime Puzzles
& Problems; link in [7] to new version; links in [35] and [54] to MR and Zbl reviews; links in [65] to sequences of ideal
multigrades; links in [xlvi] and [xlvii] to Hamza Khelif's and Antonio Oller's work related to the parbelos [54]; link in
[XIII] to citations in Ramanujan's Lost Notebook: Part IV

* Link in [xxxv] to Paul Loya's book "Amazing and Aesthetic Aspects of Analysis." My symmetric formula for pi
(see below) is a "beautiful expression" and "quite astonishing!"

* Belated publication of my solution [21] to my Monthly Problem 11222: An Infinite Product Based
on a Base; the editor comments "The proposer's elegant solution covers all cases simultaneously and efficiently."

* Link [xxvi] to Michel Waldschmidt's Bombay lectures on irrationality; he mentions my work on Euler's constant
[5] and gives my geometric proof that e is irrational and my irrationality measure for e [14]

* At long last, the MAA has put a citation of [3] in Dunham's book "Euler, the Master of Us All", and PUP has
cited [3] in Havil's book "Gamma: Exploring Euler's Constant"  see [I] and [III] below

* Link [xviii] to John Baez's web page This Week's Finds in Mathematical Physics. He displays the infinite products
for e, e^gamma, and pi/2 shown below, calls them "eerily similar" and a "mystery thrown down to us by the
math gods, like a bone from on high", and cites my Monthly note "A faster product for pi ..." [12].

* Link [VII] to A. V. Zhukov's book El Omnipresente Número "Pi". My symmetric formula for pi (see below) is an
exhibit in his "museum of elegant mathematics."

FORMULAS AND PLOTS FROM MY WORK
(SCROLL DOWN FOR CITATIONS AND LINKS TO PAPERS)
Conjectured by Knopp and first proved by Hasse 

A global series rediscovered in [1], [12]; cited in [iii], [viii], [III], [IV], [VIII], [IX] 

Antisymmetric formula for Euler's constant [3], cited in [i], [iv], [I], [II], [III], [VI] 

Symmetric formula for pi [22], cited in [vi], [xxxv], [VII] 


Series with the number of 1s and 0s in the binary expansion of n, from [17], [18], cited in [xxxii] 


The product below for e is due to

Infinite products from [11], [12], cited in [iv], [xviii], [xxiii]; the 2nd found earlier by J. Ser 

Partial products of Wallis's product (left) and my faster product for pi/2, from [12] 

Catalantype infinite products, from [37] with Yi HUANG 


Hypergeometric formula for Euler's constant [8], [11] 

Series showing ln(4/pi) is an "alternating Euler constant" [6], [17], [23], cited in [iv], [xxxii] 

Integrals from [6], [12], cited in [i], [iv], [XI]. The 3rd is a special case of Kummer's integral. 



Fibonacci & Lucasnumber products from [48], where phi is the golden ratio 

Wallistype infinite products, from [37] with Yi HUANG 


Monthly Problem: a new binomial coefficient identity [19], [5] 

Monthly Problem: inequalities for generalized binomial coefficients, from [9] and [20] 

Monthly Problem: a new baseB generalization of the WoodsRobbins product (B=2), from [21] and [28] 

Monthly Problem: Beukerstype double integral = Nesterenkotype series [5], [8], [10], [30], [VI] 

Monthly Problem: An infinite product for e^x [31], from [16] 

Monthly Problem: the highest power of 2 dividing a power sum [46], from [42], cited in [xxxiii] 

The continued fraction L is a Liouville number with irrationality base one [10] 

A number with irrationality base k/h > 1, and an inequality for all integers p,q with q large [13] 


A geometric proof that e is irrational, and a new measure of its irrationality [14] 

Transcendental numbers if Schanuel's Conjecture holds, from [40] with Diego MARQUES, cited in [xlii] 


T has irrationality base 2 and S has irrationality base infinity [10], [13] 
FOR THE THREE PLOTS BELOW I THANK

If <{log S(n)}> does NOT tend to zero as n increases, then Euler's constant is irrational [5], [8] 

If F(n) > 0, then Euler's constant is irrational, but is not a super Liouville number [10] 

If the graph > 0 as n increases, then ln(pi) is irrational, but isn't a super Liouville number [13] 
WEB PAGES AND ARTICLES CITING MY WORK IN NUMBER THEORY AND GEOMETRY
i. X. Gourdon and P. Sebah's

Numbers, Constants and Computation/GammaFormulas(PDF)

ii. Matthew Watkins'

Inexplicable Secrets of Creation/RHreformulations

iii. Eric Weisstein's


iv. _____________


v. _____________


vi. _____________


vii. ____________


viii. Philippe Biane, Jim Pitman and Marc Yor's


ix. Wadim Zudilin's

Zeta Values on the Web

x. Michel Waldschmidt's


xi. American Scientist's


xii. Keith Matthews'


xiii. ____________


xiv. Neil J. Sloane's


xv. ____________


xvi. ___________


xvii. ___________


xviii. John Baez's


xix. Stefan Kraemer's


xx. Michel Waldschmidt's


xxi. _______________


xxii. _______________


xxiii. Jesus Guillera's


xxiv. Michel Waldschmidt's


xxv. _______________












xxxi. Thomas and Joseph Dence's


xxxii. JeanPaul Allouche's


xxxiii. Doron Zeilberger's








xxxvii. Yuri Matiyasevich, Filip Saidak, and Peter Zvengrowski's




xxxviii. Robert P. Schneider's
xxxix. Aliza Steurer and Thomas Hagedorn's





Errata and Addenda to Mathematical Constants, pp. 1, 4, 6, 53, 59, 64, 69, 71, 117, 125

xliii. Emmanuel Tsukerman's


xliv. B. Berndt, S. Kim, and A. Zaharescu's






xlvii. Antonio M. OllerMarcén's


xlix. I. BenAri, D. Hay, and A. Roitershtein's
xlx. Michel Waldschmidt's
xlxii. Yuri Matiyasevich's
xlxiii. B. Berndt, S. Kim, and A. Zaharescu's
xlxiv. B. Berndt, S. Kim, M. Phaovibul, and A. Zaharescu's


BOOKS CITING MY WORK IN NUMBER THEORY
I.

Euler, the Master of Us All

by William Dunham, MAA, 1999 (8th printing, 2010), p. 36 (my antisymmetric
formula for Euler's constant exhibits "a delightful symmetry")



Book of the Year 1967, p. 503



by Jonathan Borwein, Alf van der Poorten, Jeffrey Shallit, Wadim Zudilin, CUP, 2014, pp. 159, 205



1. Analytic continuation of Riemann's zeta function and values at negative integers via Euler's transformation
of series, Proc. Amer. Math. Soc. 120 (1994) 421424.


2. The Riemann Hypothesis, simple zeros, and the asymptotic convergence degree of improper Riemann sums,
Proc. Amer. Math. Soc. 126 (1998) 13111314.


3. An antisymmetric formula for Euler's constant, Math. Mag. 71 (1998) 219220.


4. Zeros of the alternating zeta function on the line R(s)=1, Amer. Math. Monthly 110 (2003) 435437. Translated
into Chinese and published in: Mathematical Advance in Translation, Chinese Academy of Sciences, 33 #2 (2014) 188189.


5. Criteria for irrationality of Euler's constant, Proc. Amer. Math. Soc. 131 (2003) 33353344.


6. Double integrals for Euler's constant and ln 4/pi and an analog of Hadjicostas's formula, Amer. Math.
Monthly 112 (2005) 6165.


7. Formulas for pi(n) and the nth prime, International Journal of Mathematics and Computer
Science 9 (2014), no. 2, 95–98, with . . .




8. A hypergeometric approach, via linear forms involving logarithms, to criteria for irrationality of Euler's
constant, Math. Slovaca 59 (2009) 18, with an Appendix by . . .


Sergey ZLOBIN


9. Euler's constant, qlogarithms, and formulas of Ramanujan and Gosper, Ramanujan J. 12 (2006) 225244,
with . . .

Wadim ZUDILIN


10. An irrationality measure for Liouville numbers and conditional measures for Euler's constant (2003,
eprint).


11. An infinite product for e^gamma via hypergeometric formulas for Euler's constant, gamma (2003, eprint).


12. A faster product for pi and a new integral for ln pi/2, Amer. Math. Monthly 112 (2005) 729734 (article),
113 (2006) 670 (addendum).


13. Irrationality measures, irrationality bases, and a theorem of Jarnik (2004, eprint).

Abstract, PDF

14. A geometric proof that e is irrational and a new measure of its irrationality, Amer. Math.
Monthly 113 (2006) 637641 (article), 114 (2007) 659 (addendum).


15. Corrigendum: On the irrationality of some alternating series, Studia Univ. BabesBolyai Math. 49
no. 1 (2004) 105106, with . . .

Jozsef SANDOR


16. Double integrals and infinite products for some classical constants via analytic continuations of Lerch's
transcendent, Ramanujan J. 16 (2008) 247270, with . . .



17. New Vaccatype rational series for Euler's constant and its "alternating" analog ln 4/pi,






18. Summation of series defined by counting blocks of digits, J. Number Theory 123 (2007) 133143, with
. . .


Jeffrey SHALLIT


19. Problem 11026 (see image above): An identity involving harmonic numbers, Amer. Math. Monthly 110
(2003) 636 (proposal), 112 (2005) 367369 (solution).

My solution

20. Problem 11132 (see image above): Choice bounds, Amer. Math. Monthly 112 (2005) 180 (proposal), 114
(2007) 359360 (solution).



21. Problem 11222 (see image above): An infinite product based on a base , Amer. Math. Monthly
113 (2006) 459 (proposal), 115 (2008) 954955 (solution).

My solution



22. Problem 88 (see image above): A symmetric formula for pi, Math Horizons 5 (Sept., 1997) 32, 34.

23. The generalizedEulerconstant function gamma(z) and a generalization of Somos's quadratic recurrence
constant, J. Math. Anal. Appl. 332 (2007) 292314, with . . .


Petros HADJICOSTAS


24. The Taylor series for e and the primes 2, 5, 13, 37, 463: a surprising connection (2006, eprint).

PDF

25. Integrals over polytopes, multiple zeta values and polylogarithms, and Euler's constant, Math. Notes
(in English) 84 (2008) pp. 568583, Erratum p. 887; Mat. Zametki (in Russian) 84:4 (2008) pp. 609626; with . . .

Sergey ZLOBIN


26. A simple counterexample to Havil's ``reformulation'' of the Riemann Hypothesis, Elemente der Mathematik
67 (2012) 6167.


27. Which partial sums of the Taylor series for e are convergents to e? (and a link to the primes 2, 5,
13, 37, 463). Part II (includes corrected version of Part I), with . . .

Kyle SCHALM


28. Infinite products with strongly Bmultiplicative exponents, Annales Univ. Sci. Budapest, Sect. Comp.
28 (2008) 3553 (article), 32 (2010) 253 (errata), with . . .



29. Primes, pi, and irrationality measure (2007, eprint).

Abstract, PDF

30. Problem 11322 (see image above): A double integral, Amer. Math. Monthly 114 (2007) 835 (proposal),
116 (2009) 650 (solution).

31. Problem 11381 (see image above): An infinite product for the exponential, Amer. Math. Monthly, 115
(2008) 665 (proposal), 117 (2010) 283284 (solution), with . . .


32. Ramanujan primes and Bertrand's postulate, Amer. Math. Monthly 116 (2009) 630635.


33. Reducing the
ErdosMoser equation 1^n + 2^n + ... + k^n = (k+1)^n modulo k and k^2, Integers
11 (2011) article A34, with . . .



34. A monotonicity property of Riemann's xi function and a reformulation of the Riemann Hypothesis,
Periodica Mathematica Hungarica 60 (2010) 3740, with . . .



35. Algebraic and transcendental solutions of some exponential equations, Annales Mathematicae
et Informaticae 37 (2010) 151164, with . . .




36. How not to prove/disprove the Riemann Hypothesis (in preparation), with . . .



37. New Wallis and Catalantype infinite products for pi, e, and sqrt(2+sqrt(2)), Amer. Math. Monthly
117 (2010) 912917, with . . .



38. Another quadratic residue race (submitted for publication), with . . .


39. Lerch quotients, Lerch primes, FermatWilson quotients, and the WieferichnonWilson primes 2, 3,
14771,



40. Schanuel's
conjecture and algebraic powers z^w and w^z with z and w transcendental, EastWest Journal of Mathematics 12, no. 1 (2010)
7584, with . . .



41. Proofs
of power sum and binomial coefficient congruences via Pascal's identity, Amer. Math. Monthly 118 (2011)
549551, with . . .



42.
Divisibility of power sums and the generalized ErdosMoser equation, Elemente der Mathematik 67 (2012) 182–186,
with . . .



43. Ramanujan
primes: bounds, runs, twins, and gaps, J. Integer Seq. 14 (2011) article 11.6.2, with . . .




44. Robin's theorem, primes, and a new elementary reformulation of the Riemann Hypothesis, Integers
11 (2011) article A33, with . . .



JeanLouis NICOLAS


45.
The Schanuel subset conjecture implies Gelfond's power tower conjecture (2012, eprint), with . . .



46. Problem 11546 (see image above): 2adic Valuation of Bernoullistyle Sums, Amer. Math.
Monthly 118 (2011) 84 (proposal), 119 (2012) 886887 (solution), with . . .


47. From the Monthly 100 years ago: Gauss and the eccentric Halsted, to appear in Amer.
Math. Monthly.


48. Evaluation of Tachiya's algebraic infinite products involving Fibonacci and Lucas numbers,



49. Generalized Ramanujan primes, with Olivia BECKWITH, Ryan RONAN, and . . .






50. On SA, CA, and GA numbers, Ramanujan J. 29 (2012) 359384, with . . .



JeanLouis NICOLAS



51. Translation of D. Zimin’s Dynasty Foundation and Pierre Deligne Contests for Young Mathematicians,
Russian Math. Surveys 62:1 (2007) 213–216.


52. Rebuttal of Kowalenko's paper as concerns the irrationality of Euler's
constant, Acta Applicandae Mathematicae 121 (2012) 13, with . . .


Online Preview


53. Universal parabolic constant, MathWorld and Online Encyclopedia of Integer Sequences, 2005, with
. . .



54. The parbelos, a parabolic analog of the arbelos, Amer. Math. Monthly 120 (2013) 929935.


55. New approximations to Euler's constant (in preparation), with . . .


56. On variations of the arbelos (in preparation), with . . .


57. Ramanujan, Robin, highly composite numbers, and the Riemann Hypothesis, with
. . .

JeanLouis NICOLAS

Ramanujan 125 (Gainesville, FL, 2012), 145156, Contemp. Math., 627, Amer. Math. Soc., Providence, RI, 2014.


58. The padic order of power sums, the ErdosMoser equation, and Bernoulli numbers (2014,
eprint), with


Abstract, PDF

59. Universal equilateral hyperbolic constant, Online Encyclopedia of Integer Sequences, 2013, with . . .



60. More circles in the generalized arbelos (in preparation), with . . .


61. Primitive antiharmonic numbers, Online Encyclopedia of Integer Sequences, 2013, with . . .



62. On the congruence 1^m + 2^m + … + m^m == n (mod m) with n  m, Monatshefte
für Mathematik, DOI 10.1007/s0060501406600, with





63. Primary pseudoperfect numbers, arithmetic progressions, and the ErdosMoser equation, accepted by
Amer. Math. Monthly, with . . .


64. On Pascal's triangle (in preparation), with . . .




65. Ideal multigrades, symmetric and nonsymmetric: the ProuhetTarryEscott problem, Online Encyclopedia of Integer Sequences, 2014.


66. Summation of rational series twisted by strongly Bmultiplicative coefficients,
with . . .



67. A parameterized series representation of Apery's constant zeta(3) (in preparation), with . .
.



MY PAPERS IN TOPOLOGY, NUMBER THEORY & GEOMETRY:
