axiom | A set of interfaces & classes for creating domain driven | Functional Programming library
kandi X-RAY | axiom Summary
kandi X-RAY | axiom Summary
Axiom is a collection of PHP PSR-2 compliant interfaces and classes designed to help you flesh out domain driven projects. Sticking to a framework like Axiom will help keep all your projects consistent in their layout, design and implementation, hopefully making your job (and others working on your code) easier.
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Top functions reviewed by kandi - BETA
- Execute stub .
- Execute command .
- Parse a yaml file .
- Get config value .
- Hydrate content .
- Remove atom by id
- Get item by id
- Returns true if the key exists .
- Returns true if the request has details .
- Get the error message .
axiom Key Features
axiom Examples and Code Snippets
Community Discussions
Trending Discussions on axiom
QUESTION
So, I'm pretty sure this should be possible without choice. Maybe I am wrong.
Here is a minimal reproducible example of what I'm trying to do:
...ANSWER
Answered 2021-Jun-11 at 09:25In the two links you mention, the problem is the segregation enforced by Coq between propositions (those types of type Prop
) and other types (those with type Set
or Type
), with the idea being that proofs should not be needed for programs to run. However, in your case both set M
and subset M
are propositions, so this separation is not a problem: as you saw when defining fn0
, Coq is perfectly happy to use the first component of your existential type to build the function you are looking for. This is a good point of constructive mathematics: modulo the separation between Prop
and Type
, choice is simply true!
Rather, the problem comes from the second part of the proof, i.e. the proof of equality of functions. It is a subtle issue of Coq that equality of functions is not extensional, that is the following axiom cannot, in general, be proven
QUESTION
I tried to save my ontology as NTriples format using owlapi. This error appear when I try to save my ontology:
...ANSWER
Answered 2021-May-26 at 11:41The exception is a bug (please report it, as recommended in the comment), however note that those are not legal OWL axioms. The syntax and semantic specification shows sameAs as requiring two arguments at least.
(Consider that the axiom is supposed to allow definition of synonym individuals; one argument only offers no new information)
If the axioms are generated by an inferred axiom generator, looks like that code has a bug as well.
QUESTION
I'm trying to produce entailment for the rule in OWL 2 RL 'The Semantics of Equality' using owl-api. I already tried to follow: Why the inferences visualised in Protege differ from the exported inferred axioms
...ANSWER
Answered 2021-May-16 at 14:02There is no inferred axiom generator that materialises the sameAs
relations. You could write one yourself, based e.g., on InferredPropertyAssertionGenerator
, or you can open an issue on the OWLAPI GitHub repo for the functionality to be added to the library.
QUESTION
I think I still have a fundamental misunderstanding of OWL axioms :(.
Here is a small test ontology I created:
...ANSWER
Answered 2021-Apr-26 at 20:10OWL semantics is defined under open-world assumption, so you can't check if the cardinality for a certain property is exactly N, because there may be other property instances even if not declared.
More precisely, these are the checks that you can do:
Cardinality check Possible answers Sound Complete At-least N Yes (if N or more)I don't know (otherwise) Yes No Exactly N No (if N+1 or more)
I don't know (otherwise) Yes No At-most N No (if N+1 or more)
I don't know (otherwise) Yes No Solution
You can check if a cardinality is exactly 1 only if you explicitly state that "value1"
is the only value for :Ind1
. In this case :Ind1
will be part of :Class1
.
In FOL:
∀x.(R(Ind1, x) → x = "value1")
In DL:
∃R⁻.{Ind1} ⊑ {"value1"}
In OWL2 (not tested):
QUESTION
I'm having an error as the below when I'm starting my program.
...ANSWER
Answered 2021-Mar-25 at 06:00seems it's related to your config file
use -X flag with your maven command to see the full stack trace
mvn -X spring-boot:run
QUESTION
This is a follow-up on my previous question on dependently-typed arbitrarily-dimensioned matrices.
I have defined a matrix type, where each natural in dims
defines the size of the corresponding dimension. For example, for some type A
, matrix A [3; 5; 2]
is a 3x5x2 matrix:
ANSWER
Answered 2021-Apr-08 at 21:40One general approach to programming in Coq is to keep dependent types confined to specifications, without using them in programs.
So for instance, a matrix could be represented as a pair of its dimensions and its contents in a nested recursive type
QUESTION
I know that Isabelle can do case analysis by constructors (e.g. of a list), but
Is there a way to split into cases based on whether a condition is true or false?
For example, in proving the following lemma, my logic (as indicated by the following invalid proof in invalid syntax), is that if the condition "x ∈ A" is true, the proof simplifies to something trivial; it also simplifies when the condition is false (i.e. "x ∉ A"):
...ANSWER
Answered 2021-Apr-05 at 03:56You've almost correctly guessed the syntax, you can write a proof by cases for any predicate with the syntax proof (cases "")
.
For the example you provided:
QUESTION
Section 9.4 Datatype Definitions of the OWL 2 Web Ontology Language Structural Specification shows how custom datatypes can be defined, giving the following example:
...ANSWER
Answered 2021-Mar-29 at 20:23It seems to me that a:SSN
has an empty lexical space in the example because it isn't itself "the set of finite-length sequences of zero or more characters that match the regular expression [0-9]{3}-[0-9]{2}-[0-9]{4}." Rather, that is the definition of a:SSN
. The definition itself was made by constraining a datatype (xsd:string
) that does not have an empty lexical space, which is why the section on patterns that you cited applies. That is, the example uses a pattern to constrain a datatype with a non-empty lexical space to define a datatype with an empty lexical space. Accordingly, since "there can be no literals of datatype a:SSN
," you would have to either infer that "123-45-6789"^^xsd:string
is an SSN by the usage of a:hasSSN
or by asserting that "123-45-6789"^^xsd:string
is an instance of a:SSN
.
QUESTION
I have to prove the following statement : (A -> B) <-> ~A \/ B which is the decomposition of implication. I can use the ~~A -> A axiom as it is given in the exercise, but I'm stuck pretty early in the demonstration.
I start by splitting then introducing, then I've tried a bit of everything (right, left, apply the absurd axiom then introducing) but nothing looks convincing and I don't really know where to go from there...
Any suggestions ?
...ANSWER
Answered 2021-Mar-31 at 15:52From the axiom forall A, ~~A -> A
that you were given, you can prove the law of the excluded middle, forall A, A \/ ~A
. They are actually logically equivalent.
If you do that, then it is easy for you to solve your assignment.
I don't give the full solution here because it is not good to give solutions to course exercises, and I promise you will learn from doing it.
But as a small hint, when trying to prove
QUESTION
I want to switch from Axis2 1.6.4 to 1.7.9 due to various circumstances. the pom.xml and axis2.xml have been adjusted accordingly (by the Apache Migration Guide). Previously I build the project via Eclipse but now it should be build via maven. Axis2 is embedded into the project via maven-war-plugin.
Now I can't get the Endpoint to show up like before the switch to 1.7.9 . Your help would be much appreciated.
My Endpoint should be: https://localhost:8443/SoapEndpoint/services/MainService.MainServiceHttpsSoap11Endpoint/
Edit: I also switched from Java 8 to 11
pom.xml
...ANSWER
Answered 2021-Mar-30 at 09:55After some research and help the solution has been found:
There appeared a breaking change in Axis2 1.7.0 (https://issues.apache.org/jira/browse/AXIS2-5340)
Adding the following lines to the axis2.xml fixed the problem for me:
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PHP requires the Visual C runtime (CRT). The Microsoft Visual C++ Redistributable for Visual Studio 2019 is suitable for all these PHP versions, see visualstudio.microsoft.com. You MUST download the x86 CRT for PHP x86 builds and the x64 CRT for PHP x64 builds. The CRT installer supports the /quiet and /norestart command-line switches, so you can also script it.
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