Pith Number

pith:VT5LY4UE

pith:2011:VT5LY4UE32ATIQKY2K3LDGBUM3

not attested not anchored not stored refs pending

The Unlucky Door

Alexander Gnedin

arxiv:1107.0848 v1 · 2011-07-05 · math.HO · cs.GT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{VT5LY4UE32ATIQKY2K3LDGBUM3}

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	2026-05-18T04:18:46.579832Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

acfabc7284de81344158d2b6b1983466d77de03d83043a775a39bdd84b4d00ac

Aliases

arxiv: 1107.0848 · arxiv_version: 1107.0848v1 · doi: 10.48550/arxiv.1107.0848 · pith_short_12: VT5LY4UE32AT · pith_short_16: VT5LY4UE32ATIQKY · pith_short_8: VT5LY4UE

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/VT5LY4UE32ATIQKY2K3LDGBUM3 \
  | 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: acfabc7284de81344158d2b6b1983466d77de03d83043a775a39bdd84b4d00ac

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "97a97d523a8c29d61cf6898effbce6ce51fb84868d903ff58ff4683a67cecc5f",
    "cross_cats_sorted": [
      "cs.GT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.HO",
    "submitted_at": "2011-07-05T11:30:28Z",
    "title_canon_sha256": "8a1f2b444da9f40b6f414616d5e56d9746949430d606e27e82a2eb3d1a967879"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1107.0848",
    "kind": "arxiv",
    "version": 1
  }
}