Pith Number

pith:SYSRGOQD

pith:2020:SYSRGOQDKDZQP5VR23PSKM5P72

not attested not anchored not stored refs pending

Irksome: Automating Runge--Kutta time-stepping for finite element methods

Jorge Marchena-Menendez, Patrick E. Farrell, Robert C. Kirby

arxiv:2006.16282 v1 · 2020-06-29 · 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{SYSRGOQDKDZQP5VR23PSKM5P72}

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	2026-07-05T01:14:14.352582Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9625133a0350f307f6b1d6df2533affebf8633d5ff68e5777e6cefd6853d6753

Aliases

arxiv: 2006.16282 · arxiv_version: 2006.16282v1 · doi: 10.48550/arxiv.2006.16282 · pith_short_12: SYSRGOQDKDZQ · pith_short_16: SYSRGOQDKDZQP5VR · pith_short_8: SYSRGOQD

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/SYSRGOQDKDZQP5VR23PSKM5P72 \
  | 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: 9625133a0350f307f6b1d6df2533affebf8633d5ff68e5777e6cefd6853d6753

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "03aa8086389d46f830cbc86177859dec116bd1d6dc8c53a4f8037d7b75035243",
    "cross_cats_sorted": [
      "cs.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2020-06-29T18:03:36Z",
    "title_canon_sha256": "cd954839141ffce772109f662a260299a5b82527224065f23346098b66427e65"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2006.16282",
    "kind": "arxiv",
    "version": 1
  }
}