Pith Number

pith:55I7FQFH

pith:2014:55I7FQFHKG25LW2OTWDGPBVRBH

not attested not anchored not stored refs pending

Forcing a countable structure to belong to the ground model

Itay Kaplan, Saharon Shelah

arxiv:1410.1224 v3 · 2014-10-05 · 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{55I7FQFHKG25LW2OTWDGPBVRBH}

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	2026-05-18T02:19:50.366287Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ef51f2c0a751b5d5db4e9d866786b109f3096fd2fd366e6f43a64b4099f29797

Aliases

arxiv: 1410.1224 · arxiv_version: 1410.1224v3 · doi: 10.48550/arxiv.1410.1224 · pith_short_12: 55I7FQFHKG25 · pith_short_16: 55I7FQFHKG25LW2O · pith_short_8: 55I7FQFH

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/55I7FQFHKG25LW2OTWDGPBVRBH \
  | 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: ef51f2c0a751b5d5db4e9d866786b109f3096fd2fd366e6f43a64b4099f29797

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9f8e0f901f3d64100abbd0610816f6baf349e24de945a715bda40fcc278dad46",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.LO",
    "submitted_at": "2014-10-05T23:23:16Z",
    "title_canon_sha256": "be23460d6950f6ca926b54a3df792760e27b9ba81f47cc8e820c81bc1be25ba0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1410.1224",
    "kind": "arxiv",
    "version": 3
  }
}