Publications and papers submitted for publication
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Differentiability of Lipschitz functions, structure of
null sets, and other problems
to appear in Proceedings of ICM Hyderabad, India, 2010.
(Joint with G. Alberti and D. Preiss)
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Upper conical density results for general measures on $R^n$
Proc. Edinb. Math. Soc. 53 (2010), pp. 311-331.
(Joint with A. Kaenmaki, T. Rajala and V. Suomala)
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Points of middle density in the real line
Submitted.
(Joint with J. Grahl and Toby O'Neil)
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Haar measure is not approximable by balls
Acta Univ. Sapientiae Math. 1(1) (2009), pp. 83-86.
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Which measures are projections of purely unrectifiable one-dimensional
Hausdorff measures?
Proc. Amer. Math. Soc. 137(1) (2009), pp. 145-154.
(Joint with V. Suomala)
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Homeomorphisms in the Sobolev space $W^{1,n-1}$
To appear in J. Reine Angew. Math.
(Joint with S. Hencl and J. Maly)
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Tube-Measurability
Real Anal. Exchange 33(1) (2008), pp. 243-247.
(Joint with L. Wisewell)
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Sets of finite $H^1$ measure that intersect positively
many lines in infinitely many points
Ann. Acad. Sci. Fenn. Math. 32(2) (2007), pp. 545--548.
(Joint with D. Preiss)
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Universal singular sets in the calculus of variations
Arch. Ration. Mech. Anal. 190(3) (2008), pp. 371-424.
(Joint with B. Kirchheim, T. O'Neil, D. Preiss and S. Winter)
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Darboux property of Gateaux derivatives of functions on $R^n$
Acta Math. Hungar. 120(3) (2008), pp. 209-234.
(Joint with P. Holicky)
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Whitney and 1-critical arcs
Fund. Math. 199(2) (2008), pp. 119-130.
(Joint with J. Kalis and L. Zajicek)
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Structure of null sets in the plane and applications
"European Congress of Mathematics, Stockholm, June 27 - July 2, 2004",
pp. 3-22, A. Laptev Ed., European Mathematical Society Publishing House,
Zürich 2005
(Joint with G. Alberti and D. Preiss)
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Appendix: Positive measure self-similar sets without interior
Ergod. Th. & Dynam. Sys. 26 (2006), pp. 755-758.
(Joint with T. Jordan, M. Pollicott, D. Preiss and B. Solomyak)
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First-return integrals
J. Math. Anal. Appl. 305(2) (2005), pp. 546--559.
(Joint with U.B. Darji, M.J. Evans and P.D. Humke)
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Scaled-oscillation and regularity
Proc. Amer. Math. Soc. 134 (9) (2006), pp. 2667--2675.
(Joint with Z. Balogh)
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BV has the bounded approximation property
The Journal of Geometric Analysis 15(1) (2005), pp. 1-7.
(Joint with G. Alberti, A. Pelczynski and D. Preiss)
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Lipschitz functions with unexpectedly large
sets of non-differentiability points
Abstract and Applied Analysis 4 (2005), pp. 361-373.
(Joint with D. Preiss and J. Tiser)
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Lipschitz sums of convex functions
Studia Mathematica 158 (3) (2003), pp. 269-286. (Joint with A. Naor)
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A note on simultaneous polar and Cartesian decomposition
GAFA Israel Seminar 2001-2002, Lecture Notes in Mathematics, Vol.
1807, pp. 1-19. (Joint with F. Barthe and A. Naor)
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Lipschitz image of Lipschitz functions
Real Analysis Exchange, Vol 27(2) (2001/2002), pp. 735-738.
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An example illustrating $P^g(K)\neq P_0^g(K)$ for compact sets
of finite premeasure
Real Analysis Exchange, Vol 27(1) (2001/2002), pp. 65-70.
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Can one squash the space into the plane without squashing?
Geometric And Functional Analysis, Vol 11(5) (2001), pp. 933-952.
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The composition of two derivatives has a fixed point
Real Analysis Exchange, Vol 26(2) (2000/2001), pp. 749-760.
(Joint with T.C. O'Neil and D. Preiss)
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Some periodic and non-periodic recursions
Monatshefte für Mathematik, Vol 132 (2001), pp. 215-236.
(Joint with M. Laczkovich)
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Scaling properties of Hausdorff and packing measures
Math. Ann., Vol 319 (2001), pp. 817-836.
(Joint with R.D. Mauldin)
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On planar sets with prescribed packing dimensions of line sections
Math. Proc. Cambridge Philos. Soc., Vol 130 (2001), pp. 523-539.
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How to make Davies' theorem visible
Bulletin of London Math. Soc., Vol 33 (2001), pp. 59-66.
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Denjoy-Young-Saks's theorem for approximate derivatives revisited
Real Analysis Exchange, Vol 26(1) (2000/2001), pp. 485-488.
(Joint with G. Alberti, M. Laczkovich and D. Preiss)
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Absolutely continuous functions of Rado, Reichelderfer and Malý
J. of Math. Anal. and Applications, Vol 252 (2000), pp. 147-166.
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On the visibility of invisible sets
Annales Academiæ Scientiarum Fennicæ, Mathematica,
Vol 25 (2000), pp. 415-421.
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Az $x^2+dy^2$ alakú számok hányadosáról. (In Hungarian)
Középiskolai Matematikai Lapok, 2000.
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A note on strongly invisible sets
Real Analysis Exchange, Vol 25(1) (1999/2000), pp. 481-484.
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Mennyi a kicsi, ha a tér nagy? Nullahalmazok
Banach-terekben. (In Hungarian)
Matematikai Lapok, (1996/3-4), pp. 1-26.
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Aronszajn null and Gaussian null sets coincide
Israel Journal of Mathematics, Vol 111 (1999), pp. 191-201.
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On Whitney pairs
Fundamenta Mathematicae, Vol 160 (1999), pp. 63-79.
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On the affine sharpness of hearts density theorem
Real Analysis Exchange, Vol 24(1) (1998/9), pp. 289-294.
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Remark on the space of restricted derivatives
Annales Univ. Sci. Budapest., Vol 41 (1998), pp. 11-12.
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Differentiability points of a distance function
Acta Universitatis Carolinae - Mathematica et Physica, Vol 39(1-2)
(1998), pp. 105-110.
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Density theorems revisited
Acta Sci. Math. (Szeged), Vol 64 (1998), pp. 59-65.
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On the non-existence of certain bounded projections
Real Analysis Exchange, Vol 23(1) (1997/8), pp. 217-222.
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On the chord set of continuous functions
Real Analysis Exchange, Vol 22(2) (1996/7), pp. 853-856.