# Semantics

From LLWiki

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− | Linear Logic has numerous semantics some of which are described in details in the next sections. We give here an overview of the common properties that one may find in most of these models. We will denote by <math>A\longrightarrow B</math> the fact that there is a canonical morphism from <math>A</math> to <math>B</math> and by <math>A\cong B</math> the fact that there is a canonical isomorphism between <math>A</math> and <math>B</math>. By "canonical" we mean that these (iso)morphisms are natural transformations. |
+ | Linear Logic has numerous semantics some of which are described in details in the next sections. |

+ | * [[Coherent semantics]] |
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+ | * [[Phase semantics]] |
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+ | * [[Categorical semantics]] |
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+ | * [[Relational semantics]] |
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+ | * [[Finiteness semantics]] |
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+ | * [[Geometry of interaction]] |
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+ | * [[Game semantics]] |
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− | == Multiplicative semi-distributivity == |
+ | [[Provable formulas|Common properties]] may be found in most of these models. We will denote by <math>A\longrightarrow B</math> the fact that there is a canonical morphism from <math>A</math> to <math>B</math> and by <math>A\cong B</math> the fact that there is a canonical [[isomorphism]] between <math>A</math> and <math>B</math>. By "canonical" we mean that these (iso)morphisms are natural transformations. |

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− | <math> |
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− | \begin{array}{rcl} |
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− | A\tens(B\parr C) &\longrightarrow& (A\tens B)\parr C\\ |
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− | \end{array} |
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− | </math> |
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− | == Additive structure == |
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− | |||

− | <math> |
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− | \begin{array}{rcl} |
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− | A\with B \longrightarrow A &\quad& A\with B \longrightarrow B\\ |
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− | (C\limp A)\with(C\limp B) &\longrightarrow& C\limp(A\with B)\\ |
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− | A &\longrightarrow& A\with A\\ |
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− | A \longrightarrow A\plus B &\quad& B \longrightarrow A\plus B\\ |
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− | (A\limp C)\with(B\limp C) &\longrightarrow& (A\plus B)\limp C\\ |
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− | A\plus A &\longrightarrow& A\\ |
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− | \end{array} |
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− | </math> |
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− | == Exponential structure == |
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− | |||

− | <math> |
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− | \begin{array}{rclcrcl} |
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− | \oc A &\longrightarrow& A &\quad& A&\longrightarrow&\wn A\\ |
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− | \oc A &\longrightarrow& 1 &\quad& \bot &\longrightarrow& \wn A\\ |
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− | \oc A &\longrightarrow& \oc A\tens\oc A &\quad& |
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− | \wn A\parr\wn A &\longrightarrow& \wn A\\ |
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− | \oc A &\longrightarrow& \oc\oc A &\quad& \wn\wn A &\longrightarrow& \wn A\\ |
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− | \end{array} |
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− | </math> |
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− | == Monoidality of exponential == |
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− | <math> |
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− | \begin{array}{rclcrcl} |
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− | \oc A\tens\oc B &\longrightarrow& \oc(A\tens B) &\quad& |
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− | \one &\longrightarrow& \oc\one\\ |
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− | \end{array} |
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− | </math> |

## Latest revision as of 21:58, 25 April 2013

Linear Logic has numerous semantics some of which are described in details in the next sections.

- Coherent semantics
- Phase semantics
- Categorical semantics
- Relational semantics
- Finiteness semantics
- Geometry of interaction
- Game semantics

Common properties may be found in most of these models. We will denote by the fact that there is a canonical morphism from *A* to *B* and by the fact that there is a canonical isomorphism between *A* and *B*. By "canonical" we mean that these (iso)morphisms are natural transformations.