Pith Number

pith:L7RD5542

pith:2012:L7RD55424SBP5ZOGZFPJTLTE6Z

not attested not anchored not stored refs pending

A Note on the Ladyzenskaja-Babuska-Brezzi Condition

Abner J. Salgado, Francisco-Javier Sayas, Johnny Guzman

arxiv:1203.1870 v1 · 2012-03-08 · 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{L7RD55424SBP5ZOGZFPJTLTE6Z}

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	2026-05-18T04:00:36.717006Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5fe23ef79ae482fee5c6c95e99ae64f670ce5703d79fde670d0c9811a30c9138

Aliases

arxiv: 1203.1870 · arxiv_version: 1203.1870v1 · doi: 10.48550/arxiv.1203.1870 · pith_short_12: L7RD55424SBP · pith_short_16: L7RD55424SBP5ZOG · pith_short_8: L7RD5542

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/L7RD55424SBP5ZOGZFPJTLTE6Z \
  | 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: 5fe23ef79ae482fee5c6c95e99ae64f670ce5703d79fde670d0c9811a30c9138

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "91439eb9c043e7ba8a90c9c7bd00075020c2537370e618d62ebabe31ffa524bf",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2012-03-08T18:04:53Z",
    "title_canon_sha256": "f927131235ca8e03e353dd1f662cd8e475974f38abd94b1cb47ac5eac8ff3bf5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1203.1870",
    "kind": "arxiv",
    "version": 1
  }
}