Pith Number

pith:KRFJCCXI

pith:2017:KRFJCCXI3K27I436IVNJ2KQDZA

not attested not anchored not stored refs pending

On homologically locally connected spaces

Akira Koyama, Vesko Valov

arxiv:1712.04125 v1 · 2017-12-12 · math.GT · math.GN

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{KRFJCCXI3K27I436IVNJ2KQDZA}

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	2026-05-18T00:28:09.077959Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

544a910ae8dab5f4737e455a9d2a03c8163eea62436d16f7cd16304adad3359a

Aliases

arxiv: 1712.04125 · arxiv_version: 1712.04125v1 · doi: 10.48550/arxiv.1712.04125 · pith_short_12: KRFJCCXI3K27 · pith_short_16: KRFJCCXI3K27I436 · pith_short_8: KRFJCCXI

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/KRFJCCXI3K27I436IVNJ2KQDZA \
  | 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: 544a910ae8dab5f4737e455a9d2a03c8163eea62436d16f7cd16304adad3359a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "eb7c6a5d0dba138940f5dbebd2f63b15c41acd9807163c6bef49726a91fbefbf",
    "cross_cats_sorted": [
      "math.GN"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GT",
    "submitted_at": "2017-12-12T04:41:11Z",
    "title_canon_sha256": "8ebd0d87e5a81eaa9ce31efeba9f89d547cb006f38b9502f5b46b0663cb6b3d6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1712.04125",
    "kind": "arxiv",
    "version": 1
  }
}