Pith Number

pith:FX52SPBT

pith:2011:FX52SPBTMVEUXATWCWZOQ4GJXH

not attested not anchored not stored refs pending

Domain Theory and the Logic of Observable Properties

Samson Abramsky

arxiv:1112.0347 v1 · 2011-12-01 · 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{FX52SPBTMVEUXATWCWZOQ4GJXH}

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	2026-05-18T04:07:07.413374Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2dfba93c3365494b827615b2e870c9b9c6df945bb26e4940cdc1af167e164371

Aliases

arxiv: 1112.0347 · arxiv_version: 1112.0347v1 · doi: 10.48550/arxiv.1112.0347 · pith_short_12: FX52SPBTMVEU · pith_short_16: FX52SPBTMVEUXATW · pith_short_8: FX52SPBT

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/FX52SPBTMVEUXATWCWZOQ4GJXH \
  | 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: 2dfba93c3365494b827615b2e870c9b9c6df945bb26e4940cdc1af167e164371

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "88efed4d96fcbd2c250d8c7d1318cad10d0b8c2d0510100c49d6121550760b16",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LO",
    "submitted_at": "2011-12-01T22:29:23Z",
    "title_canon_sha256": "3a6d3e68d03c2a4c073a2c61544690eb93746a8ef12bbb4d317eff921d616cbd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1112.0347",
    "kind": "arxiv",
    "version": 1
  }
}