Pith Number

pith:SOIXXK2S

pith:2016:SOIXXK2S6GCJ7JWK4GP3EMFH2C

not attested not anchored not stored refs pending

Sober metric approach spaces

Dexue Zhang, Wei Li

arxiv:1607.03208 v2 · 2016-07-12 · math.GN · math.CT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{SOIXXK2S6GCJ7JWK4GP3EMFH2C}

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	2026-05-18T00:42:12.969534Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

93917bab52f1849fa6cae19fb230a7d087ef2e1a06309c352958ad1e9a4df1c8

Aliases

arxiv: 1607.03208 · arxiv_version: 1607.03208v2 · doi: 10.48550/arxiv.1607.03208 · pith_short_12: SOIXXK2S6GCJ · pith_short_16: SOIXXK2S6GCJ7JWK · pith_short_8: SOIXXK2S

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/SOIXXK2S6GCJ7JWK4GP3EMFH2C \
  | 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: 93917bab52f1849fa6cae19fb230a7d087ef2e1a06309c352958ad1e9a4df1c8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "20a431dbf75e6640d38e9c7d38297143ed886bb3a2815c01db5bd2509b80e3be",
    "cross_cats_sorted": [
      "math.CT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GN",
    "submitted_at": "2016-07-12T00:43:50Z",
    "title_canon_sha256": "b7cca997f705ef0381b979c82c744d5537ea24e74dab5ba6b4c63cac3c865e02"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1607.03208",
    "kind": "arxiv",
    "version": 2
  }
}