Pith Number

pith:RWQXCQFA

pith:2021:RWQXCQFAEFHH5T4SSBCUGLXION

not attested not anchored not stored refs pending

Infill topology and shape optimisation of lattice-skin structures

Fehmi Cirak, Xiao Xiao

arxiv:2105.04017 v3 · 2021-05-09 · math.NA · cs.CE · cs.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{RWQXCQFAEFHH5T4SSBCUGLXION}

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	2026-07-05T04:32:37.083048Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8da17140a0214e7ecf929045432ee87376a453e33fdf0a2b34f30945446c940e

Aliases

arxiv: 2105.04017 · arxiv_version: 2105.04017v3 · doi: 10.48550/arxiv.2105.04017 · pith_short_12: RWQXCQFAEFHH · pith_short_16: RWQXCQFAEFHH5T4S · pith_short_8: RWQXCQFA

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/RWQXCQFAEFHH5T4SSBCUGLXION \
  | 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: 8da17140a0214e7ecf929045432ee87376a453e33fdf0a2b34f30945446c940e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d3d2770a406e8913eff3588a63e4528655060d24e40dbff3e31ef7e904e91bba",
    "cross_cats_sorted": [
      "cs.CE",
      "cs.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2021-05-09T20:33:26Z",
    "title_canon_sha256": "00f2cf294e1da02f759f4f30ce09d8ddf2fd00bd7df5463541af3b2be59f71f1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2105.04017",
    "kind": "arxiv",
    "version": 3
  }
}