Pith Number

pith:6BSBY7C5

pith:2011:6BSBY7C52MTHQBHZDIYR3QZO7Q

not attested not anchored not stored refs pending

Mean curvature flow with obstacles

Antonin Chambolle (CMAP), Lu\'is Almeida (LJLL), Matteo Novaga

arxiv:1111.5141 v2 · 2011-11-22 · math.NA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{6BSBY7C52MTHQBHZDIYR3QZO7Q}

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	2026-05-18T01:59:27.044194Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f0641c7c5dd3267804f91a311dc32efc03139ebb69aaae9881dc2986b40b7a6a

Aliases

arxiv: 1111.5141 · arxiv_version: 1111.5141v2 · doi: 10.48550/arxiv.1111.5141 · pith_short_12: 6BSBY7C52MTH · pith_short_16: 6BSBY7C52MTHQBHZ · pith_short_8: 6BSBY7C5

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/6BSBY7C52MTHQBHZDIYR3QZO7Q \
  | 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: f0641c7c5dd3267804f91a311dc32efc03139ebb69aaae9881dc2986b40b7a6a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "dd4f0f9569309641c5fa807bc9aa4807f845e607a43f2f8bcc1d0c0b64affee2",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2011-11-22T09:49:05Z",
    "title_canon_sha256": "261ec03d26d7998fbf921b172c99919ee4e55db1bcf87f436da754ce60b1a0fd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1111.5141",
    "kind": "arxiv",
    "version": 2
  }
}