Pith Number

pith:JGQ2PKVY

pith:2008:JGQ2PKVYAGADKOG2Z62GRC4CXG

not attested not anchored not stored refs pending

A note on sigular time of mean curvature flow

Jingyi Chen, Weiyong He

arxiv:0810.3883 v1 · 2008-10-21 · math.DG · math.AP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{JGQ2PKVYAGADKOG2Z62GRC4CXG}

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	2026-07-04T15:15:20.501357Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

49a1a7aab801803538dacfb4688b82b9a9a6ef46fb5ee16790e6650ba82388ec

Aliases

arxiv: 0810.3883 · arxiv_version: 0810.3883v1 · doi: 10.48550/arxiv.0810.3883 · pith_short_12: JGQ2PKVYAGAD · pith_short_16: JGQ2PKVYAGADKOG2 · pith_short_8: JGQ2PKVY

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/JGQ2PKVYAGADKOG2Z62GRC4CXG \
  | 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: 49a1a7aab801803538dacfb4688b82b9a9a6ef46fb5ee16790e6650ba82388ec

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "874389d7b3fdcfa606aa66718cdf97d3f4a95a48211722e2aa157e1dee683a1f",
    "cross_cats_sorted": [
      "math.AP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2008-10-21T17:41:21Z",
    "title_canon_sha256": "66390282ae423e6ca9fcfc8abb5d936a0d32d09d91cb7083f1102671c47b0fbe"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0810.3883",
    "kind": "arxiv",
    "version": 1
  }
}