Pith Number

pith:L2N5BLRN

pith:2018:L2N5BLRNKEDJR4C2SXGR6R2GCX

not attested not anchored not stored refs pending

Optimization and projection of coated structures with orthotropic infill material

Jeroen Groen, Jun Wu, Ole Sigmund

arxiv:1808.04740 v1 · 2018-08-14 · cs.CE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{L2N5BLRNKEDJR4C2SXGR6R2GCX}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more

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	2026-05-18T00:08:11.821386Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5e9bd0ae2d510698f05a95cd1f474615d60473d080f186cd4d0cc7af364e93dc

Aliases

arxiv: 1808.04740 · arxiv_version: 1808.04740v1 · doi: 10.48550/arxiv.1808.04740 · pith_short_12: L2N5BLRNKEDJ · pith_short_16: L2N5BLRNKEDJR4C2 · pith_short_8: L2N5BLRN

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/L2N5BLRNKEDJR4C2SXGR6R2GCX \
  | 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: 5e9bd0ae2d510698f05a95cd1f474615d60473d080f186cd4d0cc7af364e93dc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c3d75db2599077550512f6afa43ec69f962a118e4b631a8f9a68258faf52d1b6",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CE",
    "submitted_at": "2018-08-14T15:21:12Z",
    "title_canon_sha256": "e73c9dac0f81f44834c67f3dbe9943b125c415d7b5ca079f8c1ea88c0951c1ef"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1808.04740",
    "kind": "arxiv",
    "version": 1
  }
}