Pith Number

pith:5ZH4W57D

pith:2013:5ZH4W57DNAN725AZHGKVW754HF

not attested not anchored not stored refs pending

Numerical methods for convection-diffusion problems or The 30 years war

Martin Stynes

arxiv:1306.5172 v1 · 2013-06-21 · 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{5ZH4W57DNAN725AZHGKVW754HF}

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	2026-05-18T03:20:19.508573Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ee4fcb77e3681bfd741939955b7fbc396ebf9c29347cc59a3789681f8eb3087f

Aliases

arxiv: 1306.5172 · arxiv_version: 1306.5172v1 · doi: 10.48550/arxiv.1306.5172 · pith_short_12: 5ZH4W57DNAN7 · pith_short_16: 5ZH4W57DNAN725AZ · pith_short_8: 5ZH4W57D

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/5ZH4W57DNAN725AZHGKVW754HF \
  | 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: ee4fcb77e3681bfd741939955b7fbc396ebf9c29347cc59a3789681f8eb3087f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "725a55504a646c51779e807213b83864383d9f5380b36842821eeb01445e34c5",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2013-06-21T15:30:34Z",
    "title_canon_sha256": "991aa660851b0483e67ef1bc16886a19ab32c47cb798fca74e84c23e2bc69d70"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1306.5172",
    "kind": "arxiv",
    "version": 1
  }
}