TY - JOUR A1 - Unterkofler, Karl A1 - Teschl, Susanne T1 - On the influence of inhaled volatile organic compounds (VOCs) on exhaled VOCs concentrations JF - Proceedings of the 10. Forschungsforum der Österreichischen Fachhochschulen KW - Organic Compounds Y1 - 2018 ER - TY - GEN A1 - Simeonov, Emil T1 - Living Mathematics—some limits for abstraction in mathematics and their relation to experience KW - Mathematics Y1 - ER - TY - CHAP A1 - Simeonov, Emil T1 - Is Mathematics an Issue of General Education? T2 - Mathematical Cultures: The London Meetings 2012-2014 KW - Mathematics KW - Education Y1 - 2018 ER - TY - GEN A1 - Simeonov, Emil A1 - Pieronkiewicz, Barbara T1 - The Global Math Project KW - Mathematics Y1 - 2018 ER - TY - GEN A1 - Simeonov, Emil T1 - Is Mathematics an Issue of General Education? KW - Mathematics KW - Education Y1 - 2018 ER - TY - GEN A1 - Simeonov, Emil T1 - Structure, Semiosis and Time - Anticipation and Surprise Recognition of Structure and Gestalt – exemplified by similarities between music and mathematics KW - Mathematics Y1 - ER - TY - JOUR A1 - Kuba, Markus A1 - Panholzer, Alois T1 - On bucket increasing trees, clustered increasing trees and increasing diamonds JF - Combinatorics, Probability and Computing N2 - In this work we analyse bucket increasing tree families. We introduce two simple stochastic growth processes, generating random bucket increasing trees of size n, complementing the earlier result of Mahmoud and Smythe (1995, Theoret. Comput. Sci.144 221–249.) for bucket recursive trees. On the combinatorial side, we define multilabelled generalisations of the tree families d-ary increasing trees and generalised plane-oriented recursive trees. Additionally, we introduce a clustering process for ordinary increasing trees and relate it to bucket increasing trees. We discuss in detail the bucket size two and present a bijection between such bucket increasing tree families and certain families of graphs called increasing diamonds, providing an explanation for phenomena observed by Bodini et al. (2016, Lect. Notes Comput. Sci.9644 207–219.). Concerning structural properties of bucket increasing trees, we analyse the tree parameter Kn . It counts the initial bucket size of the node containing label n in a tree of size n and is closely related to the distribution of node types. Additionally, we analyse the parameters descendants of label j and degree of the bucket containing label j, providing distributional decompositions, complementing and extending earlier results (Kuba and Panholzer (2010), Theoret. Comput. Sci.411(34–36) 3255–3273.). KW - bucket-increasing-trees KW - clustered-trees KW - stochastic-growth-processes KW - descendants KW - nodedegrees Y1 - 2021 IS - Volume 31 , Issue 4 SP - 629 EP - 661 ER - TY - JOUR A1 - Huber, Albert T1 - Remark on the quasilocal calculation of tidal heating: Energy transfer through the quasilocal surface JF - American Physical Society - Physical Review D N2 - In this paper, using the quasilocal formalism of Brown and York, the flow of energy through a closed surface containing a gravitating physical system is calculated in a way that augments earlier results on the subject by Booth and Creighton. To this end, by performing a variation of the total gravitational Hamiltonian (bulk plus boundary part), it is shown that associated tidal heating and deformation effects generally are larger than expected. This is because the aforementioned variation leads to previously unrecognized correction terms, including a bulk-to-boundary inflow term that does not appear in the original calculation of the time derivative of the Brown-York energy and leads to corrective extensions of Einstein’s quadrupole formula in the large sphere limit. KW - gravitation KW - cosmology KW - fields Y1 - VL - 105 IS - 2 ER - TY - JOUR A1 - Mairhofer, Lukas A1 - Passon, Oliver T1 - Reconsidering the Relation Between “Matter Wave Interference” and “Wave–Particle Duality” JF - Foundations of Physics N2 - Interference of more and more massive objects provides a spectacular confirmation of quantum theory. It is usually regarded as support for “wave–particle duality” and in an extension of this duality even as support for “complementarity”. We first give an outline of the historical development of these notions. Already here it becomes evident that they are hard to define rigorously, i.e. have mainly a heuristic function. Then we discuss recent interference experiments of large and complex molecules which seem to support this heuristic function of “duality”. However, we show that in these experiments the diffraction of a delocalized center-of-mass wave function depends on the interaction of the localized structure of the molecule with the diffraction element. Thus, the molecules display “dual features” at the same time, which contradicts the usual understanding of wave–particle duality. We conclude that the notion of “wave–particle duality” deserves no place in modern quantum physics. KW - Quantenmechanik KW - Welle-Teilchen-Dualismus KW - Interferenz Y1 - IS - 52/32 PB - Springer ER - TY - JOUR A1 - Huber, Albert T1 - The gravitational field of a massless particle on the horizon of a stationary black hole JF - Classical and Quantum Gravity N2 - In this work, the field of a gravitational shockwave generated by a massless point-like particle is calculated at the event horizon of a stationary Kerr–Newman black hole. Using the geometric framework of generalized Kerr–Schild deformations in combination with the spin-coefficient formalism of Newman and Penrose, it is shown that the field equations of the theory, at the event horizon of the black hole, can be reduced to a single linear ordinary differential equation for the so-called profile function of the geometry. This differential relation is solved exactly. Based on the results obtained, a physical interpretation is given for the found shockwave spacetime, and it is clarified how these results lead back to those of previous works on the subject, which deal with the much simpler cases of gravitational shockwaves in static black hole backgrounds. KW - Gravitation Y1 - ER - TY - JOUR A1 - Kuba, Markus T1 - On multisets, interpolated multiple zeta values and limit laws. JF - Electronic Journal of Combinatorics N2 - In this work we discuss a parameter σ on weighted k-element multisets of [n]={1,…,n}. The sums of weighted k-multisets are related to k-subsets, k-multisets, as well as special instances of truncated interpolated multiple zeta values. We study properties of this parameter using symbolic combinatorics. We rederive and extend certain identities for ζtn({m}k). Moreover, we introduce random variables on the k-element multisets and derive their distributions, as well as limit laws for k or n tending to infinity. KW - k-multisets KW - k-subsets KW - truncated-multiple-zeta-values KW - interpolated-multiple-zeta-values KW - harmonic-numbers Y1 - IS - Vol. 29, Issue 1 ER - TY - JOUR A1 - Hoffmann, Michael E. A1 - Kuba, Markus T1 - Logarithmic integrals, zeta values, and tiered binomial coeffcients JF - Monatshefte fuer Mathematik KW - Integrals KW - Binomial KW - Coefficient Y1 - ER - TY - GEN A1 - Mairhofer, Lukas T1 - From foundational research to application - Training Quantum Engineers KW - Didaktik KW - Quantentechnologien KW - Quantencomputer KW - Quantenkryptographie Y1 - ER - TY - GEN A1 - Mairhofer, Lukas T1 - Dying Experiments KW - Experimentalsysteme KW - Quantenphysik KW - Science and Technology Y1 - ER - TY - JOUR A1 - Belkacem, Kévin A1 - Kupka, Friedrich A1 - Philidet, Jordan A1 - Samadi, Réza T1 - Surface effects and turbulent pressure. Assessing the Gas-Γ1 and Reduced-Γ1 empirical models. JF - Astronomy & Astrophysics KW - Surface KW - Pressure Y1 - ER - TY - JOUR A1 - Kialka, Filip A1 - Stickler, Benjamin A1 - Hornberger, Klaus A1 - Fein, Yaakov A1 - Geyer, Philipp A1 - Mairhofer, Lukas A1 - Gerlich, Stefan A1 - Arndt, Markus T1 - Concepts for long-baseline, high-mass matter-wave interferometry JF - Physica Scripta N2 - Designing experiments which delocalize ever more complex and more massive particles requires a quantitative assessment of new interferometer configurations. Here, we introduce a figure of merit which quantifies the difference between a genuine quantum interference pattern and a classical shadow and use it to compare a number of near-field interferometer schemes. This allows us to identify the most promising setups for future tests of the quantum superposition principle, and to discuss the perspectives of interferometry with complex molecules and clusters. KW - Matter wave optics KW - Quantum optics in phase space KW - Meteorology Y1 - IS - 94, 2019 ER - TY - JOUR A1 - Huber, Albert T1 - Junction Conditions and local Spacetimes in General Relativity JF - The European Physical Journal C N2 - In the present work, a theoretical framework focussing on local geometric deformations is introduced in order to cope with the problem of how to join spacetimes with different geometries and physical properties. This framework is used to show that two Lorentzian manifolds can be matched by considering local deformations of the associated spacetime metrics. Based on the fact that metrics can be suitably matched in this way, it is shown that the underlying geometric approach allows the characterization of local spacetimes in general relativity. Furthermore, it is shown that said approach not only extends the conventional thin shell formalism, but also allows the treatment of geometric problems that cannot be treated with standard gluing techniques. KW - Relativity Y1 - ER - TY - JOUR A1 - Schätti, Jonas A1 - Köhler, Valentin A1 - Mayor, Marcel A1 - Fein, Yaakov A1 - Geyer, Philipp A1 - Mairhofer, Lukas A1 - Gerlich, Stefan A1 - Arndt, Markus T1 - Matter-wave interference and deflection of tripeptides decorated with fluorinated alkyl chains JF - Journal of Mass Spectrometry KW - interference KW - quantum KW - meteorology Y1 - IS - Vol 55, issue 6 ER - TY - JOUR A1 - Fein, Yaakov A1 - Shayeghi, Armin A1 - Mairhofer, Lukas A1 - Kialka, Filip A1 - Rieser, Philipp A1 - Geyer, Philipp A1 - Gerlich, Stefan A1 - Arndt, Markus T1 - Quantum-Assisted Measurement of Atomic Diamagnetism JF - Physical Review KW - diamagnetism KW - quantum KW - meteorology Y1 - IS - Volume 10, Issue 1 ER - TY - JOUR A1 - Hoffman, Michael E. A1 - Kuba, Markus A1 - Levy, Moti A1 - Louchard, Guy T1 - An Asymptotic Series for an Integral JF - Ramanujan Journal KW - asymtotic KW - integral Y1 - 2020 ER - TY - JOUR A1 - Hoffmann, Michael E. A1 - Kuba, Markus A1 - Levy, Moti A1 - Louchard, Guy T1 - An Asymptotic Series for an Integral JF - Ramanujan Journal KW - Asymptotic KW - Integral Y1 - ER - TY - JOUR A1 - Kuba, Markus A1 - Panholzer, Alois T1 - A Note on Harmonic number identities, Stirling series and multiple zeta values JF - International Journal of Number Theory KW - Multiple zeta values KW - Harmonic numbers KW - Arakawa–Kaneko zeta function KW - Stirling series Y1 - 2020 VL - 15 IS - 07 SP - 1323 EP - 1348 ER - TY - JOUR A1 - Mairhofer, Lukas A1 - Eibenberger, Sandra A1 - Shayeghi, Armin A1 - Arndt, Markus T1 - A quantum ruler for magnetic deflectometry JF - Entropy KW - Magnetic deflectometry KW - Matter-waves KW - Metrology Y1 - VL - 20 IS - 7 CY - Basel ER - TY - JOUR A1 - Kuba, Markus A1 - Panholzer, Alois T1 - Stirling permutations containing a single pattern of length three JF - The Australasian Journal of Combinatorics KW - Stirling permutations Y1 - 2020 VL - 74 IS - 2 SP - 216 EP - 239 ER - TY - JOUR A1 - Kuba, Markus T1 - A Note on the generating function of p-Bernoulli numbers JF - Quaestiones Mathematicae KW - Mathematics Y1 - ER - TY - JOUR A1 - Teschl, Susanne A1 - Unterkofler, Karl A1 - Mochalski, Pawel A1 - Teschl, Gerald A1 - Ager, C. A1 - Mayhew, C.A. A1 - King, Julian T1 - Modeling-based determination of physiological parameters of systemic VOCs by breath gas analysis, part 2. JF - Journal of Breath Research KW - Breath KW - Gas KW - Analysis Y1 - VL - 12 ER - TY - CHAP A1 - Stockinger, Harald T1 - Biographical information from monasterial archives: Ernst Mach's school year at the Gymnasium of the Benedictines in Seitenstetten T2 - History of Mathematics and Teaching of Mathematics KW - Mathematics KW - Teaching KW - History Y1 - ER - TY - GEN A1 - Stockinger, Harald T1 - Biographical information from monasterial archives: Ernst Mach's school year at the Gymnasium of the Benedictines in Seitenstetten KW - Mathematics KW - Teaching KW - History Y1 - ER - TY - CHAP A1 - Mairhofer, Lukas A1 - Dippel, Anne T1 - Traces and Patterns. Pictures of Interferences and Collisions in the Physics Lab T2 - Traces. Generating What Was There KW - interferences Y1 - 2021 ER - TY - CHAP A1 - Mairhofer, Lukas T1 - Observing the Unobservable: Quantum Interference of Complex Macromolecules T2 - Interferences - Events KW - quantum KW - interference Y1 - 2021 ER - TY - JOUR A1 - Mairhofer, Lukas A1 - Eibenberger, Sandra A1 - Cotter, Joe A1 - Romirer, Marion A1 - Shayeghi, Armin A1 - Arndt, Markus T1 - Quantum-assisted metrology of neutral vitamins in the gas-phase JF - Angewandte Chemie International Edition N2 - It has recently been shown that matter-wave interferometry can be used to imprint a periodic nanostructure onto a molecular beam, which provides a highly sensitive tool for beam displacement measurements. Herein, we used this feature to measure electronic properties of provitamin A, vitamin E, and vitamin K1 in the gas phase for the first time. The shift of the matter-wave fringes in a static electric field encodes the molecular susceptibility and the time-averaged dynamic electric dipole moment. The dependence of the fringe pattern on the intensity of the central light-wave diffraction grating was used to determine the molecular optical polarizability. Comparison of our experimental findings with molecular dynamics simulations and density functional theory provides a rich picture of the electronic structures and dynamics of these biomolecules in the gas phase with β-carotene as a particularly interesting example. KW - Deflectometry KW - Electronic structure KW - Interferometry Y1 - ER - TY - JOUR A1 - Geyer, Philipp A1 - Sezer, Ugur A1 - Rodewald, Jonas A1 - Mairhofer, Lukas A1 - Dörre, Nadine A1 - Haslinger, Philipp A1 - Eibenberger, Sandra A1 - Brand, Christian A1 - Arndt, Markus T1 - Perspectives for Quantum Interference with Biomolecules and Biomolecular Clusters JF - Physica Scripta KW - Quanteninterferenz KW - Biomoleküle Y1 - VL - 91 IS - 6 ER - TY - CHAP A1 - Unterkofler, Karl A1 - Teschl, Susanne T1 - Reproducibility and verification od real time breath VOCs concentration data by modeling T2 - Proceedings des Forschungsforum 2017 der österreichischen Fachhochschulen KW - Statistics KW - Modelling Y1 - 2018 ER - TY - JOUR A1 - Kuba, Markus A1 - Sulzbach, Henning T1 - On martingale tail sums in affine two-color urn models with multiple drawings JF - Journal of Applied Probability KW - Probability Calculation Y1 - 2018 VL - 54 IS - 1 SP - 96 EP - 117 ER - TY - GEN A1 - Unterkofler, Karl A1 - Teschl, Susanne T1 - Reproducibility and verification od real time breath VOCs concentration data by modeling KW - Statistics KW - Modelling Y1 - 2018 ER - TY - JOUR A1 - Cotter, Joe A1 - Eibenberger, Sandra A1 - Mairhofer, Lukas A1 - Cheng, Xiaxi A1 - Asenbaum, Peter A1 - Arndt, Markus A1 - Walter, Kai A1 - Nimmrichter, Stefan A1 - Hornberger, Klaus T1 - Coherence in the presence of absorption and heating in a molecule interferometer JF - Nature Communications KW - Quantenphysik KW - Molekülinterferometer Y1 - IS - 6 ER - TY - CHAP A1 - Kuba, Markus A1 - Panholzer, Alois T1 - Combinatorial analysis of growth models for series-parallel networks. T2 - Proceedings of the 27th International Conference on Probabilistic, Combinatorial and Asymptotic Methods for the Analysis of Algorithms (AofA) 2016 KW - Mathematics KW - Growth Model Y1 - 2018 ER - TY - GEN A1 - Unterkofler, Karl A1 - Teschl, Susanne T1 - Modeling the dynamic of breath methane concentration profiles during exercise on an ergometer KW - Methane concentration Y1 - ER - TY - GEN A1 - Unterkofler, Karl A1 - Teschl, Susanne T1 - On the influence of inhaled volatile organic compounds (VOCs) on exhaled VOCs concentrations KW - Organic Compounds Y1 - 2018 ER - TY - GEN A1 - Kuba, Markus A1 - Panholzer, Alois T1 - Combinatorial analysis of growth models for series-parallel networks. KW - Mathematics KW - Combinatorics Y1 - 2018 ER - TY - JOUR A1 - Kuba, Markus A1 - Panholzer, Alois T1 - On moment sequences and mixed Poisson distributions. JF - Probability Surveys KW - Mathematics KW - Statistical Distributions Y1 - 2018 ER - TY - GEN A1 - Kuba, Markus T1 - Limit laws for urn models with multiple drawings KW - Urn Models Y1 - ER - TY - GEN A1 - King, J. A1 - Unterkofler, K. A1 - Koc, H. A1 - Teschl, S. T1 - Mathematical modeling for breath gas analysis KW - Modeling KW - Breath KW - Gas KW - Analysis Y1 - ER - TY - JOUR A1 - Teschl, Susanne A1 - Batzel, J. A1 - Kappel, F. T1 - Modeling the human cardiovascular-respiratory control system with two state delays: an application to congestive heart failure JF - Technical Report 191, Spezialforschungsbereich F-003 Bericht, Karl-Franzens-Universitat KW - Modeling KW - Cardiovascular Y1 - ER - TY - JOUR A1 - Teschl, Susanne A1 - Batzel, J. A1 - Kappel, F. T1 - Modeling the human cardiovascular-respiratory control system: an optimal control application to the transition to non-REM sleep JF - Technical Report 190, Spezialforschungsbereich F-003, Karl-Franzens-Universität KW - Modeling KW - Cardiovascular KW - Sleep Y1 - ER - TY - JOUR A1 - Batzel, J. A1 - Kappel, F. A1 - Teschl, Susanne T1 - A cardiovascular-respiratory control system model including state delay with application to congestive heart failure in humans JF - Journal of Mathematical Biology KW - Modeling Y1 - IS - 50(3) SP - 293 EP - 335 ER - TY - CHAP A1 - Batzel, J. A1 - Teschl, Susanne A1 - Kappel, F. T1 - Modeling congestive heart failure: a control system model with state delay T2 - Proceedings of the 5th European Society of Mathematical and Theoretical Biology tri-annual Conference (ECMTB Conference): Mathematical Modelling & Computing in Biology and Medicine, Milano, Italy, July 2-6 2002. KW - Modeling Y1 - ER - TY - JOUR A1 - King, J. A1 - Koc, H. A1 - Unterkofler, K. A1 - Mochalski, P. A1 - Kupferthaler, A. A1 - Teschl, G. A1 - Teschl, S. A1 - Hinterhuber, H. A1 - Amann, Anton T1 - Dynamic profiles of volatile organic compounds in exhaled breath as determined by a coupled PTR-MS/GC-MS study JF - Physiological Measurement KW - Breath Y1 - VL - Vol. 31 IS - 9 ER - TY - JOUR A1 - King, J. A1 - Unterkofler, K. A1 - Teschl, G. A1 - Teschl, S. A1 - Mochalski, P. A1 - Hinterhuber, H. A1 - Koc, H. A1 - Amann, Anton T1 - A modeling-based evaluation of isothermal rebreathing for breath gas analyses of highly soluble volatile organic compounds JF - Journal of Breath Research KW - Breath Y1 - ER - TY - JOUR A1 - King, J. A1 - Unterkofler, K. A1 - Teschl, G. A1 - Teschl, S. A1 - Koc, H. A1 - Hinterhuber, H. A1 - Amann, Anton T1 - A mathematical model for breath gas analysis of volatile organic compounds with special emphasis on acetone JF - Journal of Mathematical Biology KW - Modeling KW - Breath KW - Gas KW - Analysis Y1 - SP - 959 EP - 999 ER -