Pith Number

pith:QHZFBFAD

pith:2018:QHZFBFADK67LTYX3ZJHKKVUC4G

not attested not anchored not stored refs pending

A concise frictional contact formulation based on surface potentials and isogeometric discretization

Roger A. Sauer, Thang X. Duong

arxiv:1808.10420 v2 · 2018-08-30 · cs.CE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{QHZFBFADK67LTYX3ZJHKKVUC4G}

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	2026-05-17T23:49:43.099585Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

81f250940357beb9e2fbca4ea55682e198d5c589e8b5eb10852e071412285500

Aliases

arxiv: 1808.10420 · arxiv_version: 1808.10420v2 · doi: 10.48550/arxiv.1808.10420 · pith_short_12: QHZFBFADK67L · pith_short_16: QHZFBFADK67LTYX3 · pith_short_8: QHZFBFAD

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/QHZFBFADK67LTYX3ZJHKKVUC4G \
  | 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: 81f250940357beb9e2fbca4ea55682e198d5c589e8b5eb10852e071412285500

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a9af422cdb6f80bda42e01f7ad25c5bc041c255891eaecfe08199278184e836a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CE",
    "submitted_at": "2018-08-30T17:40:40Z",
    "title_canon_sha256": "a99be8f146f89c20857a6a6d5c954ccb167e26d45812e257566656e12282f941"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1808.10420",
    "kind": "arxiv",
    "version": 2
  }
}