Pith Number

pith:NAHHQG2G

pith:2015:NAHHQG2GOTHSI56IS2PKFYH2JI

not attested not anchored not stored refs pending

Anti-Urysohn spaces

Istv\'an Juh\'asz, Lajos Soukup, Zolt\'an Szentmikl\'ossy

arxiv:1509.01420 v1 · 2015-09-04 · math.GN · 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{NAHHQG2GOTHSI56IS2PKFYH2JI}

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	2026-05-18T01:33:57.711734Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

680e781b4674cf2477c8969ea2e0fa4a1f607b149ccaca28e115894900168753

Aliases

arxiv: 1509.01420 · arxiv_version: 1509.01420v1 · doi: 10.48550/arxiv.1509.01420 · pith_short_12: NAHHQG2GOTHS · pith_short_16: NAHHQG2GOTHSI56I · pith_short_8: NAHHQG2G

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/NAHHQG2GOTHSI56IS2PKFYH2JI \
  | 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: 680e781b4674cf2477c8969ea2e0fa4a1f607b149ccaca28e115894900168753

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f46997fe76fab861c0d2aef31e9adabc5bf80e16a37d3e3bbf15409ad8312023",
    "cross_cats_sorted": [
      "math.LO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GN",
    "submitted_at": "2015-09-04T11:57:23Z",
    "title_canon_sha256": "9efb0a9aaf0a98383aaed472807366d1aba31668908e9d8c54e6e172d35a0684"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1509.01420",
    "kind": "arxiv",
    "version": 1
  }
}