Pith Number

pith:HIXYX57R

pith:2019:HIXYX57R2TDPYNGH3SZRQVUY22

not attested not anchored not stored refs pending

Around finite second-order coherence spaces

L\^e Th\`anh D\~ung Nguy\^en

arxiv:1902.00196 v3 · 2019-02-01 · cs.LO · cs.CC · 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{HIXYX57R2TDPYNGH3SZRQVUY22}

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	2026-05-17T23:46:28.951155Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3a2f8bf7f1d4c6fc34c7dcb3185698d68327b85ee76137df314683fe5321e509

Aliases

arxiv: 1902.00196 · arxiv_version: 1902.00196v3 · doi: 10.48550/arxiv.1902.00196 · pith_short_12: HIXYX57R2TDP · pith_short_16: HIXYX57R2TDPYNGH · pith_short_8: HIXYX57R

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/HIXYX57R2TDPYNGH3SZRQVUY22 \
  | 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: 3a2f8bf7f1d4c6fc34c7dcb3185698d68327b85ee76137df314683fe5321e509

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f33a2e6db9609196f8c23831e1cfce131ecd29739b4f45e15f76ffd1bf045efd",
    "cross_cats_sorted": [
      "cs.CC",
      "math.LO"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.LO",
    "submitted_at": "2019-02-01T06:18:14Z",
    "title_canon_sha256": "db888cd1ca88f10aea9166806001f60eb73e0e8d702377690309163b51e06ac7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1902.00196",
    "kind": "arxiv",
    "version": 3
  }
}