Pith Number

pith:WFPYK2QX

pith:2019:WFPYK2QXC3GALJ3BCZMBWLKATO

not attested not anchored not stored refs pending

High Performance Computing for gravitational lens modeling: single vs double precision on GPUs and CPUs

Christoph Sch\"afer, Gilles Fourestey, Jean-Paul Kneib, Markus Rexroth

arxiv:1902.03252 v1 · 2019-02-08 · astro-ph.IM · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{WFPYK2QXC3GALJ3BCZMBWLKATO}

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	2026-05-17T23:54:21.467750Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b15f856a1716cc05a76116581b2d409b8dc69f7fea268fbc3085b4fbd54ea66c

Aliases

arxiv: 1902.03252 · arxiv_version: 1902.03252v1 · doi: 10.48550/arxiv.1902.03252 · pith_short_12: WFPYK2QXC3GA · pith_short_16: WFPYK2QXC3GALJ3B · pith_short_8: WFPYK2QX

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/WFPYK2QXC3GALJ3BCZMBWLKATO \
  | 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: b15f856a1716cc05a76116581b2d409b8dc69f7fea268fbc3085b4fbd54ea66c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "91395ae4e2becdf95996c354af898cbd383c94807dd9b32c25a824f6f3a5ae12",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2019-02-08T19:01:19Z",
    "title_canon_sha256": "3ad026f3a7a0f832d652570bdb8d4576d73b3b139bcc3b284bece6e64a13388d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1902.03252",
    "kind": "arxiv",
    "version": 1
  }
}