Pith Number

pith:CDAMAHYJ

pith:2019:CDAMAHYJ5I7AFM32JXMJEHEAZ4

not attested not anchored not stored refs pending

A "poor man's" approach for high-resolution three-dimensional topology optimization of natural convection problems

Casper Schousboe Andreasen, Joe Alexandersen, Nicolo Pollini, Ole Sigmund

arxiv:1904.00182 v1 · 2019-03-30 · cs.CE · cs.DC · math.OC · physics.flu-dyn

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{CDAMAHYJ5I7AFM32JXMJEHEAZ4}

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	2026-07-05T00:22:38.296220Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

10c0c01f09ea3e02b37a4dd8921c80cf183f19b25a920ce76cad8e30c4042a4a

Aliases

arxiv: 1904.00182 · arxiv_version: 1904.00182v1 · doi: 10.48550/arxiv.1904.00182 · pith_short_12: CDAMAHYJ5I7A · pith_short_16: CDAMAHYJ5I7AFM32 · pith_short_8: CDAMAHYJ

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/CDAMAHYJ5I7AFM32JXMJEHEAZ4 \
  | 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: 10c0c01f09ea3e02b37a4dd8921c80cf183f19b25a920ce76cad8e30c4042a4a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d84fcaffbe8ac5e1df5aa6325f693a139d34155abbe5400946b778b615387a34",
    "cross_cats_sorted": [
      "cs.DC",
      "math.OC",
      "physics.flu-dyn"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CE",
    "submitted_at": "2019-03-30T09:41:13Z",
    "title_canon_sha256": "c0626ff3930e55458836dca786b08074996ab850d470ba34ad01aec3e06d7947"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1904.00182",
    "kind": "arxiv",
    "version": 1
  }
}