Pith Number

pith:SUFRWFF5

pith:2022:SUFRWFF5S7NQUDVSHQIULSCYKR

not attested not anchored not stored refs pending

Topology Optimization with Frictional Self-Contact

Chenfanfu Jiang, Danny M. Kaufman, Jianping Ye, Minchen Li, Sian Wen, Xuan Li, Yin Yang, Zeshun Zong

arxiv:2208.04844 v2 · 2022-08-06 · math.OC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{SUFRWFF5S7NQUDVSHQIULSCYKR}

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	2026-07-05T04:51:24.833066Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

950b1b14bd97db0a0eb23c1145c8585445bbec724626c9c97fbc9457a8fbfb49

Aliases

arxiv: 2208.04844 · arxiv_version: 2208.04844v2 · doi: 10.48550/arxiv.2208.04844 · pith_short_12: SUFRWFF5S7NQ · pith_short_16: SUFRWFF5S7NQUDVS · pith_short_8: SUFRWFF5

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/SUFRWFF5S7NQUDVSHQIULSCYKR \
  | 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: 950b1b14bd97db0a0eb23c1145c8585445bbec724626c9c97fbc9457a8fbfb49

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "06818c4fbe96ff879ba800be53e4d5517bd6648f2216447a43fc29d61892f586",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2022-08-06T18:39:57Z",
    "title_canon_sha256": "3e6ca25ea1a885962c159e30864ce0d5444cf2898319caf18a7bcf769bfb6267"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2208.04844",
    "kind": "arxiv",
    "version": 2
  }
}