Pith Number

pith:DRFCWYDD

pith:2022:DRFCWYDDEPBNAZ2KOFW4E7VVKY

not attested not anchored not stored refs pending

Backward error analysis for conjugate symplectic methods

Christian Offen, Robert I McLachlan

arxiv:2201.03911 v2 · 2022-01-11 · math.NA · 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{DRFCWYDDEPBNAZ2KOFW4E7VVKY}

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	2026-07-05T05:23:43.587963Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1c4a2b606323c2d0674a716dc27eb55624445de2f7e2facbd24dcb9215ba8be0

Aliases

arxiv: 2201.03911 · arxiv_version: 2201.03911v2 · doi: 10.48550/arxiv.2201.03911 · pith_short_12: DRFCWYDDEPBN · pith_short_16: DRFCWYDDEPBNAZ2K · pith_short_8: DRFCWYDD

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/DRFCWYDDEPBNAZ2KOFW4E7VVKY \
  | 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: 1c4a2b606323c2d0674a716dc27eb55624445de2f7e2facbd24dcb9215ba8be0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e1290644846341bf4b1477ca9779023a3dd1b75c0ae22f8c0010f1d0f65c4cf1",
    "cross_cats_sorted": [
      "cs.NA"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2022-01-11T12:35:22Z",
    "title_canon_sha256": "a57a03b85d5c5a5fc8081ced72064ec78019be9b42bc03552f173d8ec4a525f8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2201.03911",
    "kind": "arxiv",
    "version": 2
  }
}