Pith Number

pith:7HDI7I4I

pith:2013:7HDI7I4I4VGQQMIBI5XVX7ERXF

not attested not anchored not stored refs pending

Spatially partitioned embedded Runge-Kutta methods

Colin B. Macdonald, David I. Ketcheson, Steven J. Ruuth

arxiv:1301.4006 v2 · 2013-01-17 · 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{7HDI7I4I4VGQQMIBI5XVX7ERXF}

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	2026-05-18T03:02:59.602302Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f9c68fa388e54d083101476f5bfc91b968ed4fba0d89c0fa0de17a0fb90a8143

Aliases

arxiv: 1301.4006 · arxiv_version: 1301.4006v2 · doi: 10.48550/arxiv.1301.4006 · pith_short_12: 7HDI7I4I4VGQ · pith_short_16: 7HDI7I4I4VGQQMIB · pith_short_8: 7HDI7I4I

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/7HDI7I4I4VGQQMIBI5XVX7ERXF \
  | 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: f9c68fa388e54d083101476f5bfc91b968ed4fba0d89c0fa0de17a0fb90a8143

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a214a4f5e2aaaa4d73215185aa0d2c1590c22ad4ae31fa0133ca2deb3d8f233d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2013-01-17T08:37:07Z",
    "title_canon_sha256": "fb6b39efdff67780cfed0253e88f671d0f516757b3f32ccd205f2f63dfd46f59"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1301.4006",
    "kind": "arxiv",
    "version": 2
  }
}