Pith Number

pith:76XY4EC6

pith:2018:76XY4EC6B7C6XDSM5N7ACUAIFE

not attested not anchored not stored refs pending

Invariant domain preserving discretization-independent schemes and convex limiting for hyperbolic systems

Bojan Popov, Ignacio Tomas, Jean-Luc Guermond

arxiv:1807.02563 v1 · 2018-07-06 · 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{76XY4EC6B7C6XDSM5N7ACUAIFE}

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	2026-05-17T23:55:20.375110Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ffaf8e105e0fc5eb8e4ceb7e015008292bd0c226b9fc71eeb00ece0c10fa011a

Aliases

arxiv: 1807.02563 · arxiv_version: 1807.02563v1 · doi: 10.48550/arxiv.1807.02563 · pith_short_12: 76XY4EC6B7C6 · pith_short_16: 76XY4EC6B7C6XDSM · pith_short_8: 76XY4EC6

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/76XY4EC6B7C6XDSM5N7ACUAIFE \
  | 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: ffaf8e105e0fc5eb8e4ceb7e015008292bd0c226b9fc71eeb00ece0c10fa011a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a52b50364e16fdee95abb13f207333c0969aa58d771e631713957d3edd056536",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2018-07-06T20:49:33Z",
    "title_canon_sha256": "e7e7ec83bfcd9d6fada32e854fd9ceb7ff04227747d62e1c73134d14c009d2b3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1807.02563",
    "kind": "arxiv",
    "version": 1
  }
}