A kutatócsoport publikációi
2013
-
Nagy B, Totik V: Bernstein's Inequality for Algebraic Polynomials on Circular Arcs,
CONSTRUCTIVE APPROXIMATION.
MTMT
2012
-
Ambrus G, Kevei P, Vigh V: The diminishing segment process,
STATISTICS & PROBABILITY LETTERS 82:(1) pp. 191-195.
MTMT,
MathSciNet,
Zentralblatt,
Web of Science,
Scopus
-
Benko D, Dragnev P, Totik V: Convexity of harmonic densities,
REVISTA MATEMATICA IBEROAMERICANA 28:(4) pp. 947-960.
MTMT,
MathSciNet,
Zentralblatt,
Web of Science
-
Kérchy L, Totik V: Compression of quasianalytic spectral sets of cyclic contractions,
JOURNAL OF FUNCTIONAL ANALYSIS 263:(9) pp. 2754-2769.
MTMT,
MathSciNet,
Zentralblatt,
Web of Science,
Scopus
-
Kevei P, Mason D:
The asymptotic distribution of randomly weighted sums and self-normalized sum,
ELECTRONIC JOURNAL OF PROBABILITY 17:(46) pp. 1-21.
MTMT,
MathSciNet,
Zentralblatt,
Web of Science,
Scopus
-
Knipl DH, Röst G: Multiregional SIR Model with Infection during Transportation,
BIOMATH 1:(1) pp. Article ID: 1209255-1--7.
MTMT
-
Totik V: Polynomials with zeros and small norm on curves,
PROCEEDINGS OF THE AMERICAN MATHEMATICAL SOCIETY 140: pp. 3531-3539.
Scopus,
MTMT,
MathSciNet,
WoS
-
Totik V: Bernstein-type inequalities,
JOURNAL OF APPROXIMATION THEORY 164:(10) pp. 1390-1401.
MTMT, MathSciNet,
Zentralblatt,
Scopus
-
Totik V:
The Polynomial Inverse Image Method,
APPROXIMATION THEORY XIII: SAN ANTONIO 2010, 345-365 (2011).
MTMT,
Scopus,
Zentralblatt
-
Totik V: Chebyshev polynomials on a system of curves,
J. ANAL. MATH. 118 (2012), 317–338.
Scopus,
WoS,
MathSciNet,
MTMT
-
Totik V:
The size of irregular points for a measure,
ACTA MATH. HUNGAR. 136 (2012), no. 3, 222–231.
Scopus,
WoS,
Zentralblatt,
MathSciNet,
MTMT
-
Totik V:
Fast decreasing and orthogonal polynomials,
In: Arvesu J, Lagomasino GL (szerk.)
Recent advances in orthogonal polynomials, special functions, and their applications:
Proceedings of the 11th International Symposium (OPSFA'11) held at the Universidad Carlos III de Madrid,
Leganés, August 29–September 2, 2011.
Providence: American Mathematical Society, 2012. pp. 241-254.
WoS,
MathSciNet,
MTMT
-
Totik V, Varga T:
Non-symmetric fast decreasing polynomials and applications,
J. MATH. ANAL. APPL. 394 (2012), no. 1, 378–390
Scopus,
WoS,
Zentralblatt,
MathSciNet,
MTMT
Az alábbi publikációkban a kutatócsoport támogatóként vett részt:
-
Barbour A, Pósfai A: Couplings for Irregular Combinatorial Assemblies,
PROBABILITY APPROXIMATIONS AND BEYOND, LECTURE NOTES IN STATISTICS 2012, pp 3-12,
WoS
-
Bourgain J, Varjú PP:
Expansion in SLd(Z/qZ), q arbitrary,
WoS,
Scopus,
Zentralblatt,
MathSciNet,
MTMT
-
Golsefidy AS, Varjú PP: Expansion in perfect groups,
Scopus,
MTMT
-
Jones DA, Smith HL, Thieme HR, Röst G:
Spread of Phage Infection of Bacteria in a Petri Dish,
SIAM JOURNAL ON APPLIED MATHEMATICS 72:(2) pp. 670-688.
MTMT,
MathSciNet
-
Nakata Y, Röst G:
Global Analysis for Spread of an Infectious Disease via Human Transportation,
SIAM J. APPL. MATH., benyújtva
-
Röst G:
Baneling dynamics in the Legend of the Seeker,
Mathematical Modelling of Zombies, University of Ottawa Press, elfogadva
-
Röst G, Huang ShY, Székely L:
On a SEIR Epidemic Model with Delay
DYNAMIC SYSTEMS AND APPLICATIONS 21: pp. 33-48.
MTMT
-
Varjú PP: Expansion in
SLd(OK/I), I square-free,
WoS,
Scopus,
MathSciNet,
Zentralblatt,
MTMT
2011
-
Györfi L, Kevei P:
On the rate of convergence of the St.Petersburg games,
PERIODICA MATHEMATICA HUNGARICA, 62 (1): 13-37 (2011).
MathSciNet MR2772381,
Zentralblatt pre05990581,
Web of Science UT:000287509800002,
MTMT 1593405 rekord (hivatalos),
Scopus eid 79951719039
-
Hatvani L:
Tér darabolása síkokkal, POLYGON 20:(1) pp. 101-106. (2011).
MTMT 1818065 rekord (hivatalos)
-
Hatvani L, Székely L:
Asymptotic stability of two dimensional systems of linear difference equations and of second
order half-linear differential equations with step function coefficients,
E. J. QUALITATIVE THEORY OF DIFF. EQU. 38 : 1-17 (2011).
MathSciNet MR2805758,
Web of Science UT:000291251300001,
MTMT 1626873 rekord (hivatalos),
Scopus eid 79959254336
-
H. Knipl D, Röst G:
Modelling the strategies for age specific vaccination scheduling during influenza pandemic outbreaks,
MATH. BIOSCI. ENG. 8 (1): 123-139 (2011).
MathSciNet MR2764147,
Web of Science UT:000286879500009,
MTMT 1384561 rekord (hivatalos),
Scopus eid 78651354788
-
H. Knipl D, Röst G:
Influenza models with Wolfram Mathematica,
Interesting Mathematical Problems in Sciences and Everyday Life, 1-24 (2011).
MTMT 1670580 rekord (hivatalos)
-
Kevei P:
Asymptotics of nearly critical Galton--Watson processes with immigration,
ACTA SCI. MATH. (SZEGED), 77 (3-4): 681-702 (2011).
Zentralblatt pre06006216,
MTMT 1816511 rekord (hivatalos),
Scopus eid 84858850945
-
Kevei P, Mason D:
A note on a maximal Bernstein inequality,
BERNOULLI, 17 (3): 1054-1062 (2011).
Zentralblatt 1225.60032 ,
Web of Science UT:000293311100011,
MTMT 1670365 rekord (hivatalos),
Scopus eid 79960267164
-
Kevei P, López-Mimbela JA:
Critical Multitype Branching Systems: Extinction Result,
ELECTRONIC JOURNAL OF PROBABILITY, 16 : 1356-1380 (2011).
Web of Science UT:000294991100002,
MTMT 1702517 rekord (hivatalos),
Scopus eid 80053151765
-
Krisztin T, Vas G:
Large-amplitude periodic solutions for a differential equation with delayed positive feedback,
JOURNAL OF DYNAMICS AND DIFFERENTIAL EQUATIONS, 23 (4): 727-790 (2011).
Zentralblatt pre05996177,
MTMT 1765346 rekord (hivatalos),
Scopus eid 81155149972
-
Krisztin T, Vas G:
On the fundamental solution of linear delay differential equations with multiple delays,
E. J. QUALITATIVE THEORY OF DIFF. EQU., 36: 1-28 (2011).
MathSciNet MR2805756,
Web of Science UT:000291212400001,
MTMT 1765343 rekord (hivatalos),
Scopus eid 79958849371
-
Röst G:
On an approximate method for the delay logistic equation,
COMMUN. NONLINEAR SCI. NUMER. SIMUL., 16 (9): 3470-3474 (2011). doi:10.1016/j.cnsns.2011.01.005.
Zentralblatt 1220.65103,
Web of Science UT:000290368700005 ,
MTMT 1417057 rekord (hivatalos),
Scopus eid 79953679858
-
Röst G:
SEI model with varying infectivity and mortality,
PROC. MATHEMATICS IN SCIENCE AND TECHNOLOGY, NEW DELHI, IMC SATELLITE 2010, World Scientific,
489-498 (2011).
MTMT 1461534 rekord (hivatalos)
-
Ruzsa IZ, Varjú PP:
Euclidean algorithm in different norms,
PUBL. MATH. DEBRECEN, 78 (1): 245-249 (2011).
MathSciNet MR2777675,
Zentralblatt pre05990577,
Web of Science UT:000286571400017,
MTMT 1439090 rekord (hivatalos),
Scopus eid 79955594744
-
Totik V:
The norm of minimal polynomials on several intervals,
JOURNAL OF APPROXIMATION THEORY, 163 (6): 738-746 (2011).
MathSciNet MR2832121,
Zentralblatt 1221.41018,
Web of Science UT:000290918600004,
MTMT 1816518 rekord (hivatalos),
Scopus eid 79955152291
-
Vas G:
Infinite number of stable periodic solutions for an equation with negative feedback,
E. J. QUALITATIVE THEORY OF DIFF. EQU., 18 : 1-20 (2011).
MathSciNet MR2781172,
Web of Science UT:000287969300001,
MTMT 1765340 rekord (hivatalos),
Scopus eid 79952983115
2010
-
Csörgő S, Hatvani L:
Stability properties of solutions of linear second order differential equations with random coefficients,
J. DIFFERENTIAL EQUATIONS 248 : 21-49 (2010).
MathSciNet MR2557893,
Zentralblatt 1189.34106,
Web of Science UT:000272558100002,
MTMT 1425139 rekord (hivatalos),
Scopus eid 70349780384
-
Dénes A, Hatvani L, Stachó LL:
Eventual stability properties in a non-autonomous model of population dynamics,
NONLINEAR ANALYSIS, THEORY, METHODS & APPLICATIONS 73 (3) : 650-659 (2010).
MathSciNet MR2653737,
Zentralblatt pre05736395,
Web of Science UT:000278025700006,
MTMT 1377451 rekord (hivatalos),
Scopus eid 77955707024
-
Kevei P:
A note on asymptotics of linear combinations of iid random variables,
PERIODICA MATHEMATICA HUNGARICA, 60 (1) : 25-36 (2010).
Zentralblatt 1224.60033,
Web of Science UT:000275749800003,
MTMT 1425132 rekord (hivatalos),
Scopus eid 77949524144
-
Liz E, Röst G,
Dichotomy results for delay differential equations with negative Schwarzian derivative,
NONLINEAR ANAL. RWA, 11 (3) : 1422-1430 (2010).
MathSciNet MR2646558,
Zentralblatt pre05716715,
MTMT 1189190 rekord (hivatalos),
Scopus eid 77951024017
-
Taylor R, Totik V:
Lebesgue constants for Leja Points,
IMA JOURNAL OF NUM. ANAL., 30 : 462-486 (2010).
MathSciNet MR2608468,
Zentralblatt 1193.41003,
Web of Science UT:000277509800005,
MTMT 1425136 rekord (hivatalos),
Scopus eid 77950242304
-
Mastroianni G, Totik V:
Uniform spacing of zeros of orthogonal polynomials,
CONSTRUCTIVE APPROX., 32 : 181-192 (2010).
MathSciNet MR2677879,
Zentralblatt pre05789869, Web of Science UT:000280808800001,
MTMT 1425140 rekord (hivatalos),
Scopus eid 77955585483
-
Totik V:
Christoffel functions on curves and domains,
TRANSACTIONS OF THE AMER. MATH. SOC., 362 : 2053-2087 (2010).
MathSciNet MR2574887,
Zentralblatt 1189.26028,
Web of Science UT:000275819200015,
MTMT 1425134 rekord (hivatalos),
Scopus eid 77950879682
2009
- Györfi L, Kevei P:
St. Petersburg portfolio games,
LECTURE NOTES IN ARTIFICIAL INTELLIGENCE, 5809 : 83-96 (2009).
Zentralblatt pre05641000,
MTMT 1292952 rekord (hivatalos),
Scopus eid 77952036058
-
Hatvani L:
On the critical values of parametric resonance in Meissner's equation
by the method of difference equations,
ELECTRONIC JOURNAL OF QUALITATIVE THEORY OF DIFFERENTIAL EQUATIONS, x (Special issue) : 1-10 (2009).
MathSciNet MR2558838,
Zentralblatt 1197.70013,
Web of Science UT:000273813700014,
MTMT 247736 rekord (hivatalos)
-
Hatvani L, Toókos F, Tusnády G:
A mutation-selection recombination model in population genetics,
DYNAMIC SYSTEMS AND APPLICATIONS, 18 (2) : 335-361 (2009).
MathSciNet MR2543235,
Zentralblatt 1176.92039,
Web of Science UT:000268453000013,
MTMT 169476 rekord (hivatalos),
Scopus eid 69549116885
-
Hatvani L:
Stochastic parametric resonance in a linear oscillator at square-wave modulation,
Problems of Analytical Mechanics and Stability Theory
(Eds: Chernousko FL, Karapetyan AV, Kozlov VV, Krasovskii NN, Tkhai VN,
Vasilev SN) Fizmatlit, Moszkva, 2009, pp 392-403.
MTMT 247735 rekord (hivatalos)
-
Kevei P, Csörgő S:
Merging of linear combinations to semistable laws,
JOURNAL OF THEORETICAL PROBABILITY, 22 (3) : 772-790 (2009).
MathSciNet MR2530112,
Zentralblatt 1173.60306,
Web of Science UT:000268192300011,
MTMT 247734 rekord (hivatalos),
Scopus eid 70350663003
-
Kevei P:
Merging asymptotic expansions for semistable random variables,
LITHUANIAN MATHEMATICAL JURNAL, 49 (1) : 40-54 (2009).
MathSciNet MR2491709,
Zentralblatt 1177.60031,
Web of Science UT:000264486200004,
MTMT 247733 rekord (hivatalos),
Scopus eid 61649089322
-
Liz E, Röst G :
On the Global Attractor of Delay Differential Equations with Unimodal Feedback,
DISCRETE AND CONTINUOUS DYNAMICAL SYSTEMS, 24 (4) : 1215-1224 (2009).
MathSciNet MR2505701,
Zentralblatt 1188.34102,
Web of Science UT:000266313400009,
MTMT 1137108 rekord (hivatalos),
Scopus eid 69549111437
-
Moghadas SM, Bowman CS, Röst G, Fisman DN, Wu J:
Post-exposure prophylaxis during pandemic outbreaks,
BMC MEDICINE, 7 : 73 (2009).
Web of Science UT:000272821100001,
MTMT 1282731 rekord (hivatalos),
Scopus eid 73249142138
-
Pósfai A:
Poisson approximation in a Poisson limit theorem inspired by coupon collecting,
JOURNAL OF APPLIED PROBABILITY, 46 (2) : 585-592 (2009).
MathSciNet MR2535834,
Zentralblatt 1173.60008,
Web of Science UT:000267854000020,
MTMT 247729 rekord (hivatalos),
Scopus eid 67949123328
-
Pósfai A:
An extension of Mineka's coupling inequality,
ELECTRONIC COMMUNICATIONS IN PROBABILITY, 14 : 464-473 (2009).
MathSciNet MR2559096,
Zentralblatt 1189.60095,
Web of Science UT:000272620200002,
MTMT 247730 rekord (hivatalos),
Scopus eid 76649145442
-
Pósfai A, Csörgő S:
Asymptotic approximations for coupon collectors,
STUDIA SCIENTIARUM MATHEMATICARUM HUNGARICA, 46 (1) : 61-96 (2009).
MathSciNet MR2656482,
Zentralblatt pre05857820,
Web of Science UT:000263934200004,
MTMT 247728 rekord (hivatalos),
Scopus eid 61849144225
-
Totik V:
Chebyshev constants and the inheritance problem,
JOURNAL OF APPROXIMATION THEORY, 160 (1-2) : 187-201 (2009).
MathSciNet MR2558021,
Zentralblatt 1190.41002,
Web of Science UT:000271773200012,
MTMT 247726 rekord (hivatalos),
Scopus eid 70349986416
-
Totik V:
Universality and fine zero spacing on general sets,
ARKIV FOR MATEMATIK, 47 (2) : 361-391 (2009).
MathSciNet MR2529707,
Zentralblatt 1180.42017,
Web of Science UT:000268771100010,
MTMT 247727 rekord (hivatalos),
Scopus eid 70350012470
2008
-
Alexander ME, Moghadas SM, Röst G, Wu J:
A Delay Differential Model for Pandemic Influenza,
BULLETIN OF MATHEMATICAL BIOLOGY, 70 (2) : 382-397 (2008).
MathSciNet MR2389945,
Zentralblatt 1139.92017,
Web of Science UT:000252481900004,
MTMT 1083623 rekord (hivatalos),
Scopus eid 38349131002
-
Barát J, Varjú PP:
On square-free edge colorings of graphs,
ARS COMBINATORIA, 87: 377-383 (2008).
MathSciNet MR2414029,
Web of Science UT:000255916600029,
MTMT 1117783 rekord (hivatalos),
Scopus eid 44449158308
-
Csaba B, Pluhár A:
A randomized algorithm for the on-line weighted bipartite matching problem,
JOURNAL OF SCHEDULING, 11 (6) : 449-455 (2008).
MathSciNet MR2453421,
Zentralblatt 1176.68239,
Web of Science UT:000260541400004,
MTMT 247745 rekord (hivatalos),
Scopus eid 55849107778
-
Csaba B:
On embedding well-separable graphs,
DISCRETE MATHEMATICS, 308 (19) : 4322-4331 (2008).
MathSciNet MR2433859,
Zentralblatt 1157.05032,
Web of Science UT:000257978700004,
MTMT 247746 rekord (hivatalos),
Scopus eid 45249099114
-
Csörgő S, Kevei P:
Merging asymptotic expansions for cooperative gamblers in generalized St. Petersburg games,
ACTA MATHEMATICA HUNGARICA, 121 (1-2) : 119-156 (2008).
MathSciNet MR2463254,
Zentralblatt 1199.60052,
Web of Science UT:000262724800009,
MTMT 247744 rekord (hivatalos),
Scopus eid 58149522183
-
Csörgő S, Simons G:
Weak laws of large numbers for cooperative gamblers,
PERIODICA MATHEMATICA HUNGARICA, 57 (1) : 31-60 (2008).
MathSciNet MR2448396,
Zentralblatt pre05651903,
Web of Science UT:000261841000003,
MTMT 247743 rekord (hivatalos),
Scopus eid 53149120347
-
Guglielmi N, Hatvani L:
On small oscillations of mechanical systems with time dependent kinetic and potential energy,
DISCRETE AND CONTINUOUS DYNAMICAL SYSTEMS, 20 (4): 911-926 (2008).
MathSciNet MR2379479,
Zentralblatt 1146.70011,
Web of Science UT:000254121900008,
MTMT 247742 rekord (hivatalos),
Scopus eid 44849131750
-
Hatvani L:
Stability problems for the mathematical pendulum,
PERIODICA MATHEMATICA HUNGARICA, 56 (1) : 71-82 (2008).
MathSciNet MR2385484,
Zentralblatt 1164.34017,
Web of Science UT:000261840800006,
MTMT 247741 rekord (hivatalos),
Scopus eid 40449112158
-
Moghadas SM, Bowman CS, Röst G, Wu J:
Population-wide emergence of antiviral resistance during pandemic influenza,
PLOS ONE, 3 (3) : e1839 (2008).
Web of Science UT:000260762300040,
MTMT 1114640 rekord (hivatalos),
Scopus eid 46649107119
-
Röst G, Wu J:
SEIR epidemiological model with varying infectivity and infinite delay,
MATHEMATICAL BIOSCIENCES AND ENGINEERING, 5 (2) : 389-402 (2008).
MathSciNet MR2494035,
Zentralblatt 1165.34421,
Web of Science UT:000254378000009,
MTMT 1092767 rekord (hivatalos),
Scopus eid 52049084831
2007
-
Alexander ME, Bowman CS, Feng Z, Gardam M, Moghadas SM, Röst G, Wu J, Yan P:
Emergence of drug-resistance: implications for antiviral control of influenza pandemic,
PROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES, 274 (1619) : 1675-1684 (2007).
Web of Science UT:000247214100001,
MTMT 1083621 rekord (hivatalos),
Scopus eid 34548442594
-
Bánhelyi B, Csendes T, Garay BM, Hatvani L,
Computer Assisted Proof of Chaotic Behaviour of the Forced Damped Pendulum,
FOLIA FSN UNIVERSITATIS MASARYKIANAE BRUNENSIS MATHEMATICA 16: 9-21 (2007).
MathSciNet MR2387778,
MTMT 247761 rekord (hivatalos)
-
Bánhelyi B, Csendes T, Hatvani L:
Towards a computer-assisted proof for chaos in a forced damped pendulum equation,
JOURNAL OF COMPUTATIONAL AND APPLIED MATHEMATICS 105: 378-383 (2007).
MathSciNet MR2269522,
Zentralblatt 1108.65121,
Web of Science UT:000243812400026,
MTMT 1328853 rekord (hivatalos),
Scopus eid 33749673297
-
Barát J, Varjú PP:
On square-free vertex colorings of graphs,
STUDIA SCIENTIARUM MATHEMATICARUM HUNGARICA, 44 (3) : 411-422 (2007),
MathSciNet MR2361685,
Zentralblatt 1164.05021,
Web of Science UT:000249428300009,
MTMT 1117674 rekord (hivatalos),
Scopus eid 35148853794
-
Csaba B:
On the Bollobas-Eldridge conjecture for bipartite graphs,
COMBINATORICS PROBABILITY AND COMPUTING, 16: 661-691 (2007).
MathSciNet MR2346807,
Zentralblatt 1136.05029,
Web of Science UT:000249255900001,
MTMT 247759 rekord (hivatalos),
Scopus eid 35348825093
-
Csaba B:
Regular spanning subgraphs of bipartite graphs of high minimum degree,
ELECTRONIC JOURNAL OF COMBINATORICS, 14 (21) : 1 (2007).
MathSciNet MR2350449,
Zentralblatt 1157.05322,
Web of Science UT:000250165800002,
MTMT 247758 rekord (hivatalos),
Scopus eid 35348978388
-
Hatvani L:
The growth condition guaranteeing small solutions for a linear oscillator with an increasing
elasticity coefficient,
GEORGIAN MATHEMATICAL JOURNAL, 14 (2) : 269-278 (2007).
MathSciNet MR2341277,
Zentralblatt 1131.34029,
Web of Science UT:000255028300005,
MTMT 247755 rekord (hivatalos)
-
Kevei P:
Generalized n-Paul paradox,
STATISTICS AND PROBABILITY LETTERS, 77 (11) : 1043-1049 (2007).
MathSciNet MR2395059
Zentralblatt 1138.60026,
Web of Science UT:000247329300001,
MTMT 247754 rekord (hivatalos),
Scopus eid 34248401181
-
Pósfai A:
Rates of convergence for normal approximation in incomplete coupon collection,
ACTA SCIENTIARUM MATHEMATICARUM, 73 (1-2) : 333-348 (2007).
MathSciNet MR2339869,
Zentralblatt 1164.60009,
MTMT 247753 rekord (hivatalos)
-
Röst G, Wu J:
Domain-decomposition method for the global dynamics of delay differential equations with unimodal feedback,
PROCEEDINGS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES, 463 (2086):
2655-2669 (2007).
MathSciNet MR2352875,
Zentralblatt 1137.34038,
Web of Science UT:000248887600016,
MTMT 1083622 rekord (hivatalos),
Scopus eid 36348976487
-
Röst G:
On the Global Attractivity Controversy for a Delay Model of Hematopoiesis,
APPLIED MATHEMATICS AND COMPUTATION, 190 (1) : 846-850 (2007).
MathSciNet MR2338758,
Zentralblatt 1131.34327,
Web of Science UT:000247803500079,
MTMT 1083620 rekord (hivatalos)
Scopus eid 34249784827
-
Totik V, Varjú PP:
Smooth equilibrium measures and approximation,
ADVANCES IN MATHEMATICS, 212 (2) : 571-616 (2007).
MathSciNet MR2329313
Zentralblatt 1123.41005,
Web of Science UT:000246981200006,
MTMT 247749 rekord (hivatalos),
Scopus eid 34247271435
-
Totik V, Varjú PP:
Polynomials with prescribed zeros and small norm,
ACTA SCIENTIARUM MATHEMATICARUM, 3-4 (73) : 593-612 (2007).
MathSciNet MR2380067,
Zentralblatt 1174.26013,
MTMT 247750 rekord (hivatalos)