MacBookPro.lan 2026-5-31:19:45:55

This commit is contained in:
oskar
2026-05-31 19:45:55 +02:00
parent f3252e2341
commit 2608232f5b
11 changed files with 100 additions and 3 deletions
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"prevs"
],
"lock_view": false,
"lock_path": "ensemble de formules contradictoire.md",
"lock_path": "formule conséquence d'un ensemble de formules.md",
"custom_sort_fields": false,
"custom_sort_field_labels": []
},
@@ -254,7 +254,7 @@
"show_attributes": [],
"merge_fields": false,
"lock_view": false,
"lock_path": "ensemble de formules contradictoire.md",
"lock_path": "formule conséquence d'un ensemble de formules.md",
"field_group_labels": [
"downs"
],
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---
up:
- "[[logique]]"
tags:
- s/maths/logique
aliases:
---
```breadcrumbs
title: "Sous-notes"
type: tree
collapse: true
show-attributes: [field]
field-groups: [downs]
depth: [0, 0]
```
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@@ -5,4 +5,14 @@ tags:
- s/maths/logique
- o
aliases:
- contradictoire
---
> [!definition] [[ensemble de formules contradictoire]]
> Un ensemble de formules $\mathscr{A}$ est **contradictoire** si et seulement si il n'est pas [[ensemble de formules satisfaisable|satisfaisable]]
^definition
# Propriétés
# Exemples
+1
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@@ -4,6 +4,7 @@ up:
tags:
- s/maths/logique
aliases:
- satisfaisable
---
> [!definition] Définition
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@@ -4,6 +4,7 @@ up:
tags:
- s/maths/logique
aliases:
- satisfait
---
> [!definition] [[ensemble de formules satisfait]]
@@ -0,0 +1,12 @@
---
up:
- "[[calcul propositionnel]]"
tags:
- s/maths/logique
aliases:
- équivalents
---
> [!definition] [[ensembles de formules logiquement équivalents]]
> Deux ensembles de formules $\mathscr{A}$ et $\mathscr{B}$ sont **équivalents** si et seulement si toute formule de $\mathscr{A}$ est conséquence de $\mathscr{B}$
^definition
@@ -0,0 +1,26 @@
---
up:
- "[[calcul propositionnel]]"
tags:
- s/maths/logique
aliases:
- conséquence
- ⊢*
---
> [!definition] [[formule conséquence d'un ensemble de formules]]
> Soit $\mathscr{A}$ un ensembles de formules et $G$ une formule du [[calcul propositionnel]]
> $G$ est **conséquence** de $\mathscr{A}$ si et seulement si toute distribution de valeurs de vérité qui satisfait $\mathscr{A}$
^definition
# Propriétés
> [!proposition]+
> $\mathscr{A} \vdash^{*} G \iff \mathscr{A} \cup \{ G \}$ est [[ensemble de formules contradictoire|contradictoire]]
> > [!démonstration]- Démonstration
> > - $\boxed{\implies}$ supposons que $\mathscr{A} \vdash^{*} G$
> > Soit $\delta$ une [[valuation]] qui [[ensemble de formules satisfait|satisfait]] $\mathscr{A}$, i.e. $\forall F \in \mathscr{A},\quad \delta(F) = 1$
> > Puisque l'on a supposé $\mathscr{A} \vdash^{*} G$ sait que $\delta(G)=1$, et donc que $\delta(\neg G) = 0$, ce qui montre bien qu'un
# Exemples
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@@ -11,5 +11,5 @@ tags: []
> collapse: true
> show-attributes: [field]
> field-groups: [downs]
> depth: [0, 0]
> depth: [0, 2]
> ```
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@@ -0,0 +1,12 @@
---
up:
tags:
aliases:
---
> [!todo] Projets non-commencés
> ```dataview
> LIST title
> FROM ""
> WHERE econtains(up, this.file.link)
> ```
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---
link: "https://jplattel.nl/project/ov-klok/"
author:
published: 2024-02-14
created: 2026-05-31
description: "Im Joost Plattel, I'd like to call myself an auxiliary technologist. I assist organisations and individuals with technology and help them future strategies."
tags:
- "t/clippings"
---
The [OV Klok](https://ovklok.nl/) is a small hardware project that show the time left before the next departure of public transport you use. Its made with and ESP32 module and 7 segment digit display.
![](https://jplattel.nl/img/ovklok.jpeg)
You can [order one](https://shop.ovklok.nl/) if you live in the Netherlands and use public transport a lot from a specific location. The enclosure is made by pressure-forming plastic in the [Mayku Multiplier](https://mayku.me/multiplier) and a 3D print allowing for different methods of mounting and freestanding use.
The ESP32 runs on Circuit Python and is fully configurable with a USB-C cable through the browser with the use of WebSerial. This skips troublesome setups like captive portals or file editing. Its a simple and calm device allowing you to catch your public transport right on time!
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---
up:
- "[[logique]]"
tags:
- s/maths/logique/modèles
aliases:
---
```breadcrumbs
title: "Sous-notes"
type: tree