Pith Number

pith:QBETEHV5

pith:2009:QBETEHV5YG2OOO5ESGKRCISO7S

not attested not anchored not stored refs pending

A modified phase field approximation for mean curvature flow with conservation of the volume

Elie Bretin, Morgan Brassel

arxiv:0904.0098 v1 · 2009-04-01 · math.NA · cs.NA · 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{QBETEHV5YG2OOO5ESGKRCISO7S}

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	2026-06-03T23:06:25.358414Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8049321ebdc1b4e73ba4919511224efcb62224217c0db131f956a9234c5a1582

Aliases

arxiv: 0904.0098 · arxiv_version: 0904.0098v1 · doi: 10.48550/arxiv.0904.0098 · pith_short_12: QBETEHV5YG2O · pith_short_16: QBETEHV5YG2OOO5E · pith_short_8: QBETEHV5

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/QBETEHV5YG2OOO5ESGKRCISO7S \
  | 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: 8049321ebdc1b4e73ba4919511224efcb62224217c0db131f956a9234c5a1582

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c51cd4cb688256ae80109f9607edc565d872c3faaa14bd2bdcf8b3fef52cc5ba",
    "cross_cats_sorted": [
      "cs.NA",
      "math.AP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2009-04-01T08:49:58Z",
    "title_canon_sha256": "5a51e5aaa914ab2c8703d2f69afe7ed85190b6bf45806f2970d856a82cac477c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0904.0098",
    "kind": "arxiv",
    "version": 1
  }
}