Pith Number

pith:6FEPOGAF

pith:2018:6FEPOGAF6TFMLDDOH46DFRU4LK

not attested not anchored not stored refs pending

Accurate gradient computations for shape optimization via discrete adjoints in CFD-related multiphysics problems

Nicolas R. Gauger, Ole Burghardt

arxiv:1811.00068 v1 · 2018-10-31 · physics.comp-ph · math.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{6FEPOGAF6TFMLDDOH46DFRU4LK}

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	2026-05-18T00:01:48.343359Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f148f71805f4cac58c6e3f3c32c69c5aa3f681f3a6ef7ab7d039965f16b51d19

Aliases

arxiv: 1811.00068 · arxiv_version: 1811.00068v1 · doi: 10.48550/arxiv.1811.00068 · pith_short_12: 6FEPOGAF6TFM · pith_short_16: 6FEPOGAF6TFMLDDO · pith_short_8: 6FEPOGAF

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/6FEPOGAF6TFMLDDOH46DFRU4LK \
  | 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: f148f71805f4cac58c6e3f3c32c69c5aa3f681f3a6ef7ab7d039965f16b51d19

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "08d180b3ee213f1b3ee2a77b0244cf042733090b88dc0fd3381b88985229f92b",
    "cross_cats_sorted": [
      "math.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.comp-ph",
    "submitted_at": "2018-10-31T19:06:11Z",
    "title_canon_sha256": "cb4fc66a91f5121541cc49f059f37dda6fbdcc00eb2a20e95cbc817ecb47cc1a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1811.00068",
    "kind": "arxiv",
    "version": 1
  }
}