Des tatouages de plantes et d’animaux avec une touche surréaliste (et psychédélique) par Joanna Świrska
https://2tout2rien.fr/des-tatouages-de-plantes-et-danimaux-avec-une-touche-surrealiste-par-joanna-swirska/
#TatouageBodyPainting
#champignon #chat #cheval #coq #DzoLamka #etsy #faisan #fleur #fougere #JoannaSwirska #kangourou #MartinPecheur #negatif #oiseau #ombre #paon #papillon #plante #psychédélique #souris #surréaliste #tatouage #TatoueurTatoueuse

#nu #dos #coq #art #surrealisme #artwork #photo #photoxyde #marcdubord

Why a Digital Clock is Decidable
Finite State System: A digital clock has a finite, albeit large, number of possible states . A typical clock tracks seconds (0-59), minutes (0-59), hours (0-23 or 1-12 with AM/PM), and potentially date information. The total number of unique configurations (states) is finite. Systems with a finite number of states are generally decidable [3].
Deterministic Behavior: The clock's transitions between states are predictable and governed by fixed rules (e.g., after 59 seconds, the seconds reset to 0, and the minutes increment by 1) . This determinism allows for predictable analysis of its behavior.
Programmatic verification of a digital clock typically involves treating it as a finite state machine (FSM) or using formal verification techniques Modeling as a Finite State Machine /Model Checking
Theorem Proving: Use interactive theorem provers (e.g., #Coq, #Isabelle / #HOL) to mathematically prove the clock's implementation adheres to its formal specification
#academia folks need be motivated and paid for this and by them I mean anyone , who can do it , which means many people who couldn't pursue , this need be a #udemy course

Urn duster from caves of qud
#crossstitch #cavesofqud #coq #wip

🌘 Coq：世界頂尖的巨集組語器？
➤ 利用 Coq 構建簡潔的 x86 語意與可驗證的組語器
✤ https://nickbenton.name/coqasm.pdf
研究人員使用 Coq 證明輔助工具，成功對 x86 架構的子集進行了形式化建模。他們透過結合相依型別、型別類別及自訂符號，大幅簡化了 x86 的語意表示，使其更簡潔易懂，克服了其原有的繁複印象。該模型具體地以 Coq 函數處理位元、位元組和記憶體，並將這些具體表示映射到 SSREFLECT 函式庫的數學物件（自然數和模 2^n 的整數）以進行定理證明。此外，研究人員還利用符號支援了 Coq 內的標準組語語法，包括詞彙作用域標籤，並將 Coq 的一般定義作為強大的「巨集」功能，實現了條件判斷、迴圈、堆疊配置的局部變數及參數化程序等。最終，組語器能在 Coq 內部執行，生成十六進位位元組序列，並附帶一個正確性定理，將記憶體中的機器碼與適用於程式驗證的隔離邏輯公式連結起來。
+ 這真是太令人驚豔了！竟然能用 Coq 來處理這麼底層的東西，而且還能生成可執行的程式碼，這對系統軟體
#軟體開發 #程式驗證 #Coq #x86