Pith Number

pith:NWPNBFPN

pith:2017:NWPNBFPNEFLFXZKZDJ3LCHR7Q5

not attested not anchored not stored refs pending

Approximation of a Brittle Fracture Energy with a Constraint of Non-Interpenetration

Antonin Chambolle (CMAP), Gilles Francfort (LAGA), Sergio Conti (Institute for Applied Mathematics Universitat Bonn)

arxiv:1709.04208 v2 · 2017-09-13 · math.NA · physics.class-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{NWPNBFPNEFLFXZKZDJ3LCHR7Q5}

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	2026-05-18T00:25:55.000585Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6d9ed095ed21565be5591a76b11e3f875c57c1c88f7b36d0d43e3f32379f105f

Aliases

arxiv: 1709.04208 · arxiv_version: 1709.04208v2 · doi: 10.48550/arxiv.1709.04208 · pith_short_12: NWPNBFPNEFLF · pith_short_16: NWPNBFPNEFLFXZKZ · pith_short_8: NWPNBFPN

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/NWPNBFPNEFLFXZKZDJ3LCHR7Q5 \
  | 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: 6d9ed095ed21565be5591a76b11e3f875c57c1c88f7b36d0d43e3f32379f105f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "89af6fff056c3418c81aec73a994b42a45ee8cd09e9746906a74a5d5dfec3e6c",
    "cross_cats_sorted": [
      "physics.class-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2017-09-13T09:24:51Z",
    "title_canon_sha256": "45e3470fbdf72ee01964969c66429cdaa3dd86424542293b252609e12b7e218d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1709.04208",
    "kind": "arxiv",
    "version": 2
  }
}