Pith Number

pith:4JBX55DC

pith:2013:4JBX55DCIAVXRMPKYNQ2SZIS37

not attested not anchored not stored refs pending

On the extension to mean curvature flow in lower dimension

Cheng Liang

arxiv:1304.2627 v2 · 2013-04-09 · math.DG

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

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	2026-05-18T03:03:21.035587Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e2437ef462402b78b1eac361a96512dfd0bee2102d7b238710a085735a01e654

Aliases

arxiv: 1304.2627 · arxiv_version: 1304.2627v2 · doi: 10.48550/arxiv.1304.2627 · pith_short_12: 4JBX55DCIAVX · pith_short_16: 4JBX55DCIAVXRMPK · pith_short_8: 4JBX55DC

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/4JBX55DCIAVXRMPKYNQ2SZIS37 \
  | 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: e2437ef462402b78b1eac361a96512dfd0bee2102d7b238710a085735a01e654

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7f57c83065a1310beb15df8d3c2c336e39fa8fa4a086005784d0dcbbc81a6c69",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2013-04-09T15:09:07Z",
    "title_canon_sha256": "9b50193699ec21b51517fa06caa45e1959edf37fd7350465d06e01a107199481"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1304.2627",
    "kind": "arxiv",
    "version": 2
  }
}