Presentation on theme: "Particles and Waves in Conceptual Time Systems Karl Erich Wolff Mathematics and Science Faculty University of Applied Sciences Darmstadt Ernst Schröder."— Presentation transcript:
Particles and Waves in Conceptual Time Systems Karl Erich Wolff Mathematics and Science Faculty University of Applied Sciences Darmstadt Ernst Schröder Center for Conceptual Knowledge Processing Research Group Concept Analysis at Darmstadt University of Technology
1.Introduction: Problems in Physics 2.Temporal Concept Analysis 3.Examples of Conceptual Time Systems 4.Time Dimension and Branching Life Tracks 5.Object Identification: Conceptual Representation of a Tale 6.Particles and Waves Outline
1.Reality – Observation - Theory 2.Formal Representations: Numbers, Scales, and Systems 3.Continuity and Discreteness 4.Granularity, States, and Situations 5.Transitions and Life Tracks 6.Objects, Particles, and Waves Problems in Physics
Theories of Space and Time Aristoteles: continuum, point of time, duration, time as a category Classical Physics: example: x(t)=a; x(t)=x(0) + v t + ½at² Special and General Theory of Relativity: Space-Time (curved) Quantum Theory: Time-dependent Schrödinger function ψ(t) Automata theory: States, Transitions (without an explicit time description) Mathematical System Theory: State? System? Quantum Gravity: Looking for a theory with an appropriate time description
Einsteins Granularity Remark Albert Einstein: Zur Elektrodynamik bewegter Körper Annalen der Physik 17 (1905): 891-921 Footnote on page 893: Die Ungenauigkeit, welche in dem Begriff der Gleichzeitigkeit zweier Ereignisse an (annähernd) demselben Orte steckt und gleichfalls durch eine Abstraktion überbrückt werden muß, soll hier nicht erörtert werden.
A General Theory for Objects in Space and Time... should cover discrete and continuous descriptions needs a theory of granularity needs a suitable notion of system and a notion of states depending on the granularity transitions: time-dependent changes between states objects as subsystems (and not as atoms) should construct a temporal logic based on these temporal systems
Conceptual Time Systems with Objects and a Time Relation (CTSOT) g h Object 2 Object 1 i j Time part TEvent part C Time scalesEvent scales vw K(C) time statesstates situations object concepts: derived contextK(T) |
Using the order dimension we define: The time dimension is the order dimension of the concept lattice of the time part The time scale dimension is the order dimension of the time scale These dimensions may be greater than one! Are life tracks 1-dimensional ? Time Dimension = 1 ???
Branching Life Tracks? Unique-State-Lemma: A conceptual time system is at each time granule in exactly one situation, in exactly one state, and in exactly one time state. But branching of life tracks is possible! Example: We send an abstract letter in two copies. Time Relation DayTown (letter,0)0A (letter,1)1B (letter,2)2C (letter,3)3D A B C D
Indistinguishable Objects ? An observer of a temporal system who describes that system by a CTSOT has to decide how to choose the objects of the CTSOT. Like tennis balls they may be indistinguishable with repect to some parts of the chosen description. In the following German tale Der Wettlauf zwischen dem Hasen und dem Igel (The Race Between the Hare and the Hedgehog) the hare cannot distinguish the hedgehog and the hedgehogs wife.
Hare and Hedgehog: partial data actual objects objecttime hare- object placerunning hedgehog0hedgehog0 houseno hh-wife0hh-wife0hedgehoghouseno hedgehog1hedgehog1 fieldno
Hare and Hedgehog: State Space hedgehog hare hh-wife
Your consent to our cookies if you continue to use this website.