Pith Number

pith:LC5ZM2QF

pith:2013:LC5ZM2QFG6FJ3HYBYYKU2EIJSW

not attested not anchored not stored refs pending

Towards Synthetic Descriptive Set Theory: An instantiation with represented spaces

Arno Pauly, Matthew de Brecht

arxiv:1307.1850 v2 · 2013-07-07 · cs.LO · math.CT · math.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{LC5ZM2QFG6FJ3HYBYYKU2EIJSW}

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	2026-05-18T02:50:42.978987Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

58bb966a05378a9d9f01c6154d1109958f1f06cc1bae32551de0f7cb9548cd48

Aliases

arxiv: 1307.1850 · arxiv_version: 1307.1850v2 · doi: 10.48550/arxiv.1307.1850 · pith_short_12: LC5ZM2QFG6FJ · pith_short_16: LC5ZM2QFG6FJ3HYB · pith_short_8: LC5ZM2QF

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/LC5ZM2QFG6FJ3HYBYYKU2EIJSW \
  | 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: 58bb966a05378a9d9f01c6154d1109958f1f06cc1bae32551de0f7cb9548cd48

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ac7a5b20d5a26371c5e9895d48cde5c4bc0521d00de41a29e8defc840452ee9a",
    "cross_cats_sorted": [
      "math.CT",
      "math.LO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LO",
    "submitted_at": "2013-07-07T11:00:56Z",
    "title_canon_sha256": "e3fe46700cb1f3430ff8368c5c87e51f066ca74cb31089c034eba5a3149f2832"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1307.1850",
    "kind": "arxiv",
    "version": 2
  }
}