Pith Number

pith:JOFSCO62

pith:2018:JOFSCO62LGHXYVMR5TIEMVI7I6

not attested not anchored not stored refs pending

Free sequences in P({\omega})/fin

David Chodounsk\'y, Jan Greb\'ik, Vera Fischer

arxiv:1808.05930 v2 · 2018-08-17 · 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{JOFSCO62LGHXYVMR5TIEMVI7I6}

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	2026-05-17T23:47:44.169800Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4b8b213bda598f7c5591ecd046551f47a3fbaf33f9146ee40d6689e12fee43b7

Aliases

arxiv: 1808.05930 · arxiv_version: 1808.05930v2 · doi: 10.48550/arxiv.1808.05930 · pith_short_12: JOFSCO62LGHX · pith_short_16: JOFSCO62LGHXYVMR · pith_short_8: JOFSCO62

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/JOFSCO62LGHXYVMR5TIEMVI7I6 \
  | 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: 4b8b213bda598f7c5591ecd046551f47a3fbaf33f9146ee40d6689e12fee43b7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bffb991199ad6e37050eab3a75f18c0e0785a4a875eac613d35b5ccefbad0f84",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.LO",
    "submitted_at": "2018-08-17T17:02:00Z",
    "title_canon_sha256": "338c9d6e45f4dc6489f862961183f7ee86c36959df5c550b69385c8e6b305525"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1808.05930",
    "kind": "arxiv",
    "version": 2
  }
}