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Topic: Partial trace

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	Partial trace - Wikipedia, the free encyclopedia
		In linear algebra and functional analysis, the partial trace is a generalization of the trace.
		The partial trace has applications in quantum information and decoherence which is relevant for quantum measurement and thereby to the decoherent approaches to interpretations of quantum mechanics, including consistent histories and the relative state interpretation..
		Thus the partial trace is the quantum mechanical equivalent of this operation.
	en.wikipedia.org /wiki/Partial_trace (713 words)

	POTA - Homepage (Site not responding. Last check: 2007-10-13)
		An execution trace is modeled as a partial order which enables succinct representation of exponential number of possible total order execution traces.
		Given an execution trace and a predicate (specification) in RCTL+, first the computation slice with respect to the predicate is computed, then if the initial state of the execution trace is contained in the computation slice, the predicate is satisfied.
		The instrumented program is such that it outputs the values of variables relevant to the predicate in question and keeps a vector clock that is updated for each internal, send and receive event according to the Fidge/Mattern algorithm.
	maple.ece.utexas.edu /~sen/POTA.html (271 words)

	HTTP/1.1: Method Definitions
		A partial GET requests that only part of the entity be transferred, as described in section 14.35.
		TRACE allows the client to see what is being received at the other end of the request chain and use that data for testing or diagnostic information.
		The value of the Via header field (section 14.45) is of particular interest, since it acts as a trace of the request chain.
	www.w3.org /Protocols/rfc2616/rfc2616-sec9.html (2241 words)

	Problem Determination Guide
		When a region is autostarted, trace is restored to the settings that were active when the region shut down.
		A summary of the trace status is written to console.msg when the region initializes and further messages appear when the status of trace changes.
		Each trace hook identifier is associated with a particular type of trace entry.
	www.umiacs.umd.edu /~jhu/DOCS/TX4.2/html/erzhae/erzhae20.htm (3095 words)

	Trace (linear algebra) - Wikipedia, the free encyclopedia
		The use of the term trace arises from the German term Spur (cognate with the English spoor), which, as a function in mathematics, is often abbreviated to "Sp".
		The concept of trace of a matrix is generalised to the trace class of compact operators on Hilbert spaces.
		Partial trace is another generalization of the trace that is operator-valued.
	en.wikipedia.org /wiki/Trace_(linear_algebra) (798 words)

	How to Troubleshoot Linux Kernel Panics (Site not responding. Last check: 2007-10-13)
		It is often crucial to have a full stack trace, something that may not be available if only a screen dump is provided — the top of the stack may scroll off the screen, leaving only a partial stack trace.
		If only a partial stack trace is available, it can be tricky to isolate the root cause, since there is no explicit information about what module of function call caused the panic.
		If only a partial trace is available and the supporting information is not sufficient to isolate root cause, it may be useful to use KDB.
	resource.intel.com /telecom/support/tnotes/tnbyos/2000/tn062.htm (1189 words)

	Overview: Object Level Trace
		Object Level Trace (OLT) is an extension of the IBM Distributed Debugger that enables you to trace and debug multilingual, distributed applications from a single workstation.
		The sample trace is available on the workstation where you have installed the OLT viewer.
		Partial order concentrates on the causal relationships between events, rather than their chronological order.
	www.ncsa.uiuc.edu /UserInfo/Resources/Hardware/IBMp690/IBM/usr/idebug/help/en_US/olt/concepts/cdolt.htm (626 words)

	vanrijkom.org: Partial Evaluation (Site not responding. Last check: 2007-10-13)
		A while back I've been playing with partial evaluation using Flash.
		partial gets assigned the function that follows from the partial evaluation of foo (in this case, it will return a function taking 2 arguments since foo is evaluated using one argument - so 3 - 1 nets 2.
		Finally partial is invoked returning the full result "Hello World" just like the result would have been when directly invoking foo with 3 arguments.
	www.vanrijkom.org /archives/2005/06/partial_evaluat.html (367 words)

	REDUCTOR manual page
		Partial safety reduction both eliminates the tau-transitions and cuts the redundant transitions (as defined in [Mou92]) of spec.
		Partial strong reduction replaces duplicate transitions (i.e., transitions with same source state, target state, and label) by a single transition.
		Partial tau-compression reduction is usually fast (linear in the size of the Labelled Transition System).
	www.inrialpes.fr /vasy/cadp/man/reductor.html (1559 words)

	Products - Ultiboard 9 PCB Layout (Site not responding. Last check: 2007-10-13)
		Ultiboard’s unique “follow-me” trace placement combines the power and automation of an autorouter with the flexibility and control of manual placement — it is completely unique in the industry.
		Simply guide the path of the trace with your cursor, and the “follow-me” feature automatically routes from the last placed segment to your mouse.
		Fast, gridless and precise, it routes the trace between the two nearest pads on the net.
	www.electronicsworkbench.com /products/proprod_ub08.html (159 words)

	[No title] (Site not responding. Last check: 2007-10-13)
		The method to obtain the curvatures of the dendrites along their length involves first obtaining the digital pictures, and then to trace (with the computer mouse) the dendrites in the picture.
		As an illustration of the method, the picture shows a partial tracing of the dendrites that are to the left of the plaque.
		Quantities such as the current length traversed by that particular trace, the x-y locations of the mouse, the local curvature, and the radius of gyration are interactively updated as the trace is performed.
	polymer.bu.edu /~ccruz/gui_programs/curvy/cw_curvatures.html (146 words)

	Premonoidal categories and a graphical view of programs
		Traces were initially proposed as a categorical model of cycles in knots, and this graphical presentation is just a simplified version of the knot diagrams presented by Joyal, Street and Verity.
		Instead, we use a weaker notion of partial traceability, where we impose the restriction that feedback edges are traceable.
		The axiomatization used for partially traced cartesian categories is more powerful that that of Joyal, Street and Verity's axiomatization for traced monoidal categories.
	klee.cs.depaul.edu /premon/paper-trace.html (464 words)

	[No title]
		The trace norms of $D_{N:1}(t)$ and $F(t)$ are separately equal to $1$, so it is significant that their difference $D_{N:1}(t)-F(t)$ converges to $0$ in the trace norm.
		For $n \le N$, the $n^{th}$ {\it partial trace} is a contraction from $\TT(\BbH^{\otimes N})$ onto $\TT(\BbH^{\otimes n})$.
		The partial trace \[ T_{:m} \quad \hbox{ is the operator with integral kernel} \quad \int \rho(x,z,y,z)dz.
	www.ma.utexas.edu /mp_arc/papers/02-249 (4341 words)

	User Guide for Campus Manager 3.0.1 (Voice Update) - Troubleshooting Connectivity Problems Using Campus Manager ...
		No trace or "Could not reach source" error on status line could indicate that the problem is related to IP connectivity at end-user host A (source).
		An unsuccessful or partial trace might indicate that there is a connectivity problem related to the subnet where the CiscoWorks2000 server resides.
		A successful path trace might indicate that you are able to reach both end points independently, but the end points cannot communicate with each other.
	www.cisco.com /en/US/products/sw/cscowork/ps563/products_user_guide_chapter09186a00800806af.html (853 words)

	Chapter 7 Continued: Analyzing Stack Traces
		There are three popular ways to generate a stack trace: sending a signal to the Java VM; the Java VM generates a stack trace for you; or using debugging tools or API calls.
		Obviously, if you generated the stack trace yourself this should not be much of an issue, but you may see a stack trace posted on a newsgroup or in an email article.
		The stack trace you have here is slightly different to the stack trace that appears in the bug report, but caused by the same effect.
	java.sun.com /developer/onlineTraining/Programming/JDCBook/stack.html (2604 words)

	Query Signaling Trace
		This command retrieves and displays the A-B-bit information on signaling that is stored in the signaling trace buffer for the specified port.
		It is possible to display a partial trace while the accumulation of information is still in progress.The information displayed by this command varies according to the type of signal specified.
		First field--displays the time elapsed since the tracing was enabled for the event in minutes, seconds, and milliseconds.
	www.net.com /support/manuals/html/idnx/oi/oi_87.html (456 words)

	Collecting Oracle Extended Trace (10046 event)
		The best time to collect is to turn tracing on, have a user start their process and turn tracing off after the process has completed.
		Tracing a session is very easy if you know what session to trace.
		In some applications it may be difficult to start tracing by changing code or finding a session because of connection pooling.
	www.databasejournal.com /features/oracle/article.php/3469891 (943 words)

	Using Campus Manager 3.0 - Troubleshooting Connectivity Problems Using Campus Manager Applications [CiscoWorks ... (Site not responding. Last check: 2007-10-13)
		Run a path trace from end-user host A (source) to end-user host B (destination).
		Run a reverse path trace from end-user host B (source) to end-user host A (destination).
		If the reverse trace is also unsuccessful or a "Could not reach source" error displays on the status line, there might be a problem between the CiscoWorks2000 server and the end-user hosts that is preventing Path Analysis from performing the trace between end-user hosts A and B. Step 7
	www.cisco.com /en/US/products/sw/cscowork/ps563/products_user_guide_chapter09186a00800ca0d8.html (875 words)

	Profiling
		For any given dial time, the state of the trace file is reflected in the main window, the Focus dialog, the Datatype dialog, and the Kiviat dialog.
		As the trace file is played, the values in the fields change as processes communicate with each other.
		These raw trace files are then consolidated to a.tr output file (previously specified in the Prefix field of the mpirun options trace dialog).
	www.uic.edu /depts/accctest/hardware/borg/mpi/4_profile.html (3325 words)

	Leave No Trace: Master Educator Course
		Successful graduates of the Master Educator course have the ability to train others in Leave No Trace skills and ethics, and can offer Leave No Trace Trainer courses (2-day) and Awareness Workshops (1-day or shorter).
		Partial scholarships are available through Leave No Trace Center for Outdoor Ethics Scholarships are available for private citizens, organization members, and others interested in teaching Leave No Trace.
		If you are awarded a scholarship after you have attended your Master Educator course, you will receive partial reimbursement directly from Leave No Trace Center for Outdoor Ethics If the deadline closest to your course date is missed, your application will be held until the next deadline.
	www.lnt.org /training/mastercourses/index.html (684 words)

	Premonoidal categories and a graphical view of programs
		Taking C to be the category of traceable graphs up to bisimulation, and TC to be the full subcategory where the objects are traceable sorts, we have a partial trace given by forming a feedback loop:
		We shall provide a different axiomatization of traces than that provided by Joyal, Street and Verity, but we shall show below that in the case when C and TC are the same category, we recover their definition.
		A partially traced cartesian category is a partially traced monoidal category where the monoid is product and the trace is uniform wrt shuffles.
	klee.cs.depaul.edu /premon/paper-complete-ptm.html (644 words)

	Some bipartite states do not arise from channels
		It is well known that the action of a quantum channel on a state can be represented, using an auxiliary space, as the partial trace of an associated bipartite state.
		Recently, it was observed that for the bipartite state associated with the optimal average input of the channel, the entanglement of formation is simply the entropy of the reduced density matrix minus the Holevo capacity.
		denotes the partial trace and we have identified
	www.research.ibm.com /journal/rd/481/ruskai.html (1240 words)

	Partial Order Trace Analyzer (POTA) for Distributed Programs (ResearchIndex)
		In this paper, we present a prototype implementation of Partial Order Trace Analyzer (POTA), a tool for checking execution traces of both message passing and shared memory programs using temporal logic.
		So far runtime verification tools have used the total order model of an execution trace, whereas POTA uses a partial order model.
		The partial order model enables us to capture possibly exponential number of interleavings and, in turn,...
	citeseer.ist.psu.edu /612853.html (610 words)

	Louis Salvail homepage (Site not responding. Last check: 2007-10-13)
		The first involves the knowledge of the unitary transform acting on both the environement and the target systems from which the environement is traced out.
		These are operations for which measurements are applied and the outcome gets partially (or completely) known to the target system.
		If a measurement occurs and the outcome remains unknown outside the environement then the operation remains trace preserving (this is what happen when the environement applies a CNOT as described at equation (8.7)).
	www.brics.dk /~salvail/qip.html (2599 words)

	Partial Trace of a Multiqubit System -- from Mathematica Information Center
		For many situations in Quantum Information Theory it is necessary to trace out a subgroup of qubits from a larger group.
		For example, suppose Alice, Bob and Charlie each have a qubit with the total system described by a density matrix.
		What the TraceSystem function does, is allow you to trace out an arbitrary number of qubits from a large system of N-qubits by getting Mathematica do the work for you.
	library.wolfram.com /infocenter/MathSource/5571 (140 words)

	Many-worlds interpretation - Wikipedia, the free encyclopedia
		Mixed state from observation is partial trace of a linear superposition of states as shown in lower left-hand corner.
		The partial trace of this mixed state is obtained by summing the operator coefficients of
		The post-filter state of the system is the partial trace of the entangled state of the augmented system.
	en.wikipedia.org /wiki/Many-worlds_interpretation (5633 words)

	CICS Administration Reference
		You set this attribute to the size, in bytes, of the buffer that is used for main memory tracing.
		When system trace is in effect, CICS writes all system trace entries to the main memory buffer.
		This attribute implies that the contents of the main trace buffers will be included in the output of the transaction dumps produced by the region.
	www.umiacs.umd.edu /~jhu/DOCS/TX4.2/html/erzhac/erzhac14.htm (6924 words)

	partial traces , fermion antisymmetry and density matrix
		Im confused\nwith the relationship between these two steps: (anti)symmetrization\nand partial tracing.\n\nI suppose that i was expecting that the partial trace got me the\n\\rho_{A} density alone (which is pure, hence it can be expressed as a\nwavefunction on A).\n\n\nA density/wavefunction that depends upon an antisimetrization step\nbefore partial trace looks very bad.
		I suppose that i was expecting that the partial trace got me the
		A density matrix always has trace 1.\nandgt;\n\n\nWhen you have a density matrix that is not pure, how would you break\nit into sums of pure parts?\n\n

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Arnold Neumaier wrote in message news:<40B342D3.2050008@univie.ac.at>...

www.physicsforums.com /showthread.php?t=26069 (2378 words)

	partial traces , fermion antisymmetry and density matrix
		Hi, Usually when one is first brought the problem in Quantum Mechanics to deal with systems of more than one particle, one appeals to the notion of tensor product spaces.
		Im confused with the relationship between these two steps: (anti)symmetrization and partial tracing.
		I suppose that i was expecting that the partial trace got me the \rho_{A} density alone (which is pure, hence it can be expressed as a wavefunction on A).
	www.lns.cornell.edu /spr/2004-05/msg0061197.html (170 words)

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