Pith Number

pith:NMSZXQWH

pith:2013:NMSZXQWHKO4GWG7BT4PCS3AT7N

not attested not anchored not stored refs pending

A posteriori error estimates for time-dependent reaction-diffusion problems based on the Payne-Weinberger inequality

Pekka Neittaanm\"aki, Sergey Repin, Svetlana Matculevich

arxiv:1312.4361 v1 · 2013-12-16 · 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{NMSZXQWHKO4GWG7BT4PCS3AT7N}

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	2026-05-18T03:04:34.792978Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6b259bc2c753b86b1be19f1e296c13fb740c6d2ff66cb39021dad451b282949d

Aliases

arxiv: 1312.4361 · arxiv_version: 1312.4361v1 · doi: 10.48550/arxiv.1312.4361 · pith_short_12: NMSZXQWHKO4G · pith_short_16: NMSZXQWHKO4GWG7B · pith_short_8: NMSZXQWH

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/NMSZXQWHKO4GWG7BT4PCS3AT7N \
  | 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: 6b259bc2c753b86b1be19f1e296c13fb740c6d2ff66cb39021dad451b282949d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9b6b92e89f6e687c62f42b5ddd5ad4aba6ca6b0c2c77769085565f6b17d5264b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2013-12-16T14:02:48Z",
    "title_canon_sha256": "391e01cb9ea153577638024641a9b7da38ffb44517076b747f7c1aa52d171ed7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1312.4361",
    "kind": "arxiv",
    "version": 1
  }
}