class RingsAlgebraTool extends Tool with AlgebraTool
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- new RingsAlgebraTool()
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final
def
!=(arg0: Any): Boolean
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final
def
##(): Int
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def
==(arg0: Any): Boolean
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final
def
asInstanceOf[T0]: T0
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final
def
cancel(): Boolean
Cancels the current tool operation and returns true on success, false otherwise.
Cancels the current tool operation and returns true on success, false otherwise.
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- RingsAlgebraTool → Tool
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def
clone(): AnyRef
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def
eq(arg0: AnyRef): Boolean
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equals(arg0: Any): Boolean
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def
finalize(): Unit
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def
getClass(): Class[_]
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final
def
groebnerBasis(polynomials: List[Term]): List[Term]
Computes the Gröbner Basis of the given set of polynomials (with respect to some fixed monomial order).
Computes the Gröbner Basis of the given set of polynomials (with respect to some fixed monomial order). Gröbner Bases can be made unique for the fixed monomial order, when reduced, modulo scaling by constants.
- returns
The Gröbner Basis of
polynomials
. The Gröbner Basis spans the same ideal aspolynomials
but has unique remainders of polynomialReduce.
- Definition Classes
- RingsAlgebraTool → AlgebraTool
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def
hashCode(): Int
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final
def
init(config: Map[String, String]): Unit
Initializes the tool with tool-specific configuration parameters.
Initializes the tool with tool-specific configuration parameters.
- Definition Classes
- RingsAlgebraTool → Tool
-
final
def
isInitialized: Boolean
Checks whether this tool has been initialized already.
Checks whether this tool has been initialized already.
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- RingsAlgebraTool → Tool
-
final
def
isInstanceOf[T0]: Boolean
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val
name: String
Returns the name of the tool.
Returns the name of the tool.
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- RingsAlgebraTool → Tool
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final
def
ne(arg0: AnyRef): Boolean
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final
def
notify(): Unit
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def
notifyAll(): Unit
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final
def
polynomialReduce(polynomial: Term, GB: List[Term]): (List[Term], Term)
Computes the multivariate polynomial reduction of
polynomial
divided with respect to the set of polynomialsGB
, which is guaranteed to be unique iffGB
is a Gröbner basis.Computes the multivariate polynomial reduction of
polynomial
divided with respect to the set of polynomialsGB
, which is guaranteed to be unique iffGB
is a Gröbner basis. Returns the list of cofactors and the remainder. Repeatedly divides the leading term ofpolynomial
by a corresponding multiple of a polynomial ofGB
while possible. Each individual reduction divides the leading term ofpolynomial
by the required multiple of the leading term of the polynomial ofGB
such that those cancel. Let l(p) be the leading monomial of p and lc(p) its leading coefficient. Then each round of reduction of p:=polynomial with leading terml*X^v
picks a polynomial g in
GBand turns it into
p := p - l/lc(g) * X^v/l(g) * g
alias
p := p - (l/(lc(g) * l(g)))*X^v * g
The former leading monomial
X^v
no longer occurs in the resulting polynomial and
pgot smaller or is now 0. To determine leading terms, polynomial reduction uses the same fixed monomial order that groeberBasis() uses. The remainders will be unique (independent of the order of divisions) iff
GBis a Gröbner Basis.
- polynomial
the multivariate polynomial to divide by the elements of
GB
until saturation.- GB
the set of multivariate polynomials that
polynomial
will repeatedly be divided by. The result of this algorithm is particularly insightful (and has unique remainders) ifGB
is a Gröbner Basis.- returns
(coeff, rem) where
rem
is the result of multivariate polynomial division ofpolynomial
byGB
andcoeff
are the respective coefficients of the polynomials inGB
that explain the result. That ispolynomial == coeff(1)*GB(1) + coeff(2)*GB(2) + ... + coeff(n)*GB(n) + rem
alias
rem == polynomial - coeff(1)*GB(1) - coeff(2)*GB(2) - ... - coeff(n)*GB(n)
In addition, the remainder
rem
is small in that its leading monomial cannot be divided by leading monomials of any polynomial inGB
. The resultrem
is unique whenGB
is a Gröbner Basis.
- Definition Classes
- RingsAlgebraTool → AlgebraTool
-
final
def
quotientRemainder(term: Term, div: Term, x: Variable): (Term, Term)
Computes the quotient and remainder of
term
divided bydiv
.Computes the quotient and remainder of
term
divided bydiv
.- term
the polynomial term to divide, considered as a univariate polynomial in variable
v
with coefficients that may have other variables.- div
the polynomial term to divide
term
by, considered as a univariate polynomial in variablev
with coefficients that may have other variables.
- Definition Classes
- RingsAlgebraTool → AlgebraTool
-
final
def
restart(): Unit
Check whether the managed tool is still alive and restart it if need be.
Check whether the managed tool is still alive and restart it if need be.
- Definition Classes
- RingsAlgebraTool → Tool
-
final
def
shutdown(): Unit
Shutdown the tool
Shutdown the tool
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- RingsAlgebraTool → Tool
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final
def
synchronized[T0](arg0: ⇒ T0): T0
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def
toString(): String
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def
wait(): Unit
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def
wait(arg0: Long, arg1: Int): Unit
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wait(arg0: Long): Unit
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KeYmaera X: An aXiomatic Tactical Theorem Prover
KeYmaera X is a theorem prover for differential dynamic logic (dL), a logic for specifying and verifying properties of hybrid systems with mixed discrete and continuous dynamics. Reasoning about complicated hybrid systems requires support for sophisticated proof techniques, efficient computation, and a user interface that crystallizes salient properties of the system. KeYmaera X allows users to specify custom proof search techniques as tactics, execute tactics in parallel, and interface with partial proofs via an extensible user interface.
http://keymaeraX.org/
Concrete syntax for input language Differential Dynamic Logic
Package Structure
Main documentation entry points for KeYmaera X API:
edu.cmu.cs.ls.keymaerax.core
- KeYmaera X kernel, proof certificates, main data structuresExpression
- Differential dynamic logic expressions:Term
,Formula
,Program
Sequent
- Sequents of formulasProvable
- Proof certificates transformed by rules/axiomsRule
- Proof rules as well asUSubstOne
for (one-pass) uniform substitutions and renaming.StaticSemantics
- Static semantics with free and bound variable analysisKeYmaeraXParser
.edu.cmu.cs.ls.keymaerax.parser
- Parser and pretty printer with concrete syntax and notation for differential dynamic logic.KeYmaeraXPrettyPrinter
- Pretty printer producing concrete KeYmaera X syntaxKeYmaeraXParser
- Parser reading concrete KeYmaera X syntaxKeYmaeraXArchiveParser
- Parser reading KeYmaera X model and proof archive.kyx
filesDLParser
- Combinator parser reading concrete KeYmaera X syntaxDLArchiveParser
- Combinator parser reading KeYmaera X model and proof archive.kyx
filesedu.cmu.cs.ls.keymaerax.infrastruct
- Prover infrastructure outside the kernelUnificationMatch
- Unification algorithmRenUSubst
- Renaming Uniform Substitution quickly combining kernel's renaming and substitution.Context
- Representation for contexts of formulas in which they occur.Augmentors
- Augmenting formula and expression data structures with additional functionalityExpressionTraversal
- Generic traversal functionality for expressionsedu.cmu.cs.ls.keymaerax.bellerophon
- Bellerophon tactic language and tactic interpreterBelleExpr
- Tactic language expressionsSequentialInterpreter
- Sequential tactic interpreter for Bellerophon tacticsedu.cmu.cs.ls.keymaerax.btactics
- Bellerophon tactic library for conducting proofs.TactixLibrary
- Main KeYmaera X tactic library including many proof tactics.HilbertCalculus
- Hilbert Calculus for differential dynamic logicSequentCalculus
- Sequent Calculus for propositional and first-order logicHybridProgramCalculus
- Hybrid Program Calculus for differential dynamic logicDifferentialEquationCalculus
- Differential Equation Calculus for differential dynamic logicUnifyUSCalculus
- Unification-based uniform substitution calculus underlying the other calculi[edu.cmu.cs.ls.keymaerax.btactics.UnifyUSCalculus.ForwardTactic ForwardTactic]
- Forward tactic framework for conducting proofs from premises to conclusionsedu.cmu.cs.ls.keymaerax.lemma
- Lemma mechanismLemma
- Lemmas are Provables stored under a name, e.g., in files.LemmaDB
- Lemma database stored in files or database etc.edu.cmu.cs.ls.keymaerax.tools.qe
- Real arithmetic back-end solversMathematicaQETool
- Mathematica interface for real arithmetic.Z3QETool
- Z3 interface for real arithmetic.edu.cmu.cs.ls.keymaerax.tools.ext
- Extended back-ends for noncritical ODE solving, counterexamples, algebra, simplifiers, etc.Mathematica
- Mathematica interface for ODE solving, algebra, simplification, invariant generation, etc.Z3
- Z3 interface for real arithmetic including simplifiers.Entry Points
Additional entry points and usage points for KeYmaera X API:
edu.cmu.cs.ls.keymaerax.launcher.KeYmaeraX
- Command-line launcher for KeYmaera X supports command-line argument-help
to obtain usage informationedu.cmu.cs.ls.keymaerax.btactics.AxIndex
- Axiom indexing data structures with keys and recursors for canonical proof strategies.edu.cmu.cs.ls.keymaerax.btactics.DerivationInfo
- Meta-information on all derivation steps (axioms, derived axioms, proof rules, tactics) with user-interface info.edu.cmu.cs.ls.keymaerax.bellerophon.UIIndex
- Index determining which canonical reasoning steps to display on the KeYmaera X User Interface.edu.cmu.cs.ls.keymaerax.btactics.Ax
- Registry for derived axioms and axiomatic proof rules that are proved from the core.References
Full references on KeYmaera X are provided at http://keymaeraX.org/. The main references are the following:
1. André Platzer. A complete uniform substitution calculus for differential dynamic logic. Journal of Automated Reasoning, 59(2), pp. 219-265, 2017.
2. Nathan Fulton, Stefan Mitsch, Jan-David Quesel, Marcus Völp and André Platzer. KeYmaera X: An axiomatic tactical theorem prover for hybrid systems. In Amy P. Felty and Aart Middeldorp, editors, International Conference on Automated Deduction, CADE'15, Berlin, Germany, Proceedings, volume 9195 of LNCS, pp. 527-538. Springer, 2015.
3. André Platzer. Logical Foundations of Cyber-Physical Systems. Springer, 2018. Videos