Pith Number

pith:MQIHQJ5G

pith:2005:MQIHQJ5GZQ4I2SO353SIO5R7S2

not attested not anchored not stored refs pending

Relational reasoning in the region connection calculus

Mingsheng Ying, Sanjiang Li, Yongming Li

arxiv:cs/0505041 v1 · 2005-05-14 · cs.AI · cs.LO

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{MQIHQJ5GZQ4I2SO353SIO5R7S2}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-07-04T14:25:02.363208Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

64107827a6cc388d49dbeee487763f96989d6e6c95ba580f53d8a652cb0d0f23

Aliases

arxiv: cs/0505041 · arxiv_version: cs/0505041v1 · doi: 10.48550/arxiv.cs/0505041 · pith_short_12: MQIHQJ5GZQ4I · pith_short_16: MQIHQJ5GZQ4I2SO3 · pith_short_8: MQIHQJ5G

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/MQIHQJ5GZQ4I2SO353SIO5R7S2 \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 64107827a6cc388d49dbeee487763f96989d6e6c95ba580f53d8a652cb0d0f23

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f17c2ba76d085b26950d5b16313703244041c140f4d6e961c265bbbc0e6fc166",
    "cross_cats_sorted": [
      "cs.LO"
    ],
    "license": "",
    "primary_cat": "cs.AI",
    "submitted_at": "2005-05-14T21:16:31Z",
    "title_canon_sha256": "be549311352b2654ed274a518f3470132bdb439e4abeeb77651051dde6dfe566"
  },
  "schema_version": "1.0",
  "source": {
    "id": "cs/0505041",
    "kind": "arxiv",
    "version": 1
  }
}