Pith Number

pith:ETCRNRNR

pith:2017:ETCRNRNR5QOV77EHBGLWP75EWA

not attested not anchored not stored refs pending

Fully computable a posteriori error estimator using anisotropic flux equilibration on anisotropic meshes

Natalia Kopteva

arxiv:1704.04404 v2 · 2017-04-14 · 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{ETCRNRNR5QOV77EHBGLWP75EWA}

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	2026-05-18T00:39:58.190406Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

24c516c5b1ec1d5ffc87099767ffa4b011d81a89b935bf27d098af5416ef5e65

Aliases

arxiv: 1704.04404 · arxiv_version: 1704.04404v2 · doi: 10.48550/arxiv.1704.04404 · pith_short_12: ETCRNRNR5QOV · pith_short_16: ETCRNRNR5QOV77EH · pith_short_8: ETCRNRNR

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/ETCRNRNR5QOV77EHBGLWP75EWA \
  | 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: 24c516c5b1ec1d5ffc87099767ffa4b011d81a89b935bf27d098af5416ef5e65

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "41d5f7e8458a90c6f8443d48a3e33e5a48cad504af0c03396f89460ec0345eb0",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2017-04-14T12:07:53Z",
    "title_canon_sha256": "4be7d528d013fa628a5502d116321865ba5ad0aab3e3528b4234a092c2c9baee"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1704.04404",
    "kind": "arxiv",
    "version": 2
  }
}