Pith Number

pith:AC5MQB2D

pith:2014:AC5MQB2DA3B4FZ2YHYFPRCTDB3

not attested not anchored not stored refs pending

A numerically stable a posteriori error estimator for reduced basis approximations of elliptic equations

Andreas Buhr, Christian Engwer, Mario Ohlberger, Stephan Rave

arxiv:1407.8005 v1 · 2014-07-30 · 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{AC5MQB2DA3B4FZ2YHYFPRCTDB3}

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	2026-05-18T00:56:58.880020Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

00bac8074306c3c2e7583e0af88a630ee5954e5e14b32324e6ff02e13f26252e

Aliases

arxiv: 1407.8005 · arxiv_version: 1407.8005v1 · doi: 10.48550/arxiv.1407.8005 · pith_short_12: AC5MQB2DA3B4 · pith_short_16: AC5MQB2DA3B4FZ2Y · pith_short_8: AC5MQB2D

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/AC5MQB2DA3B4FZ2YHYFPRCTDB3 \
  | 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: 00bac8074306c3c2e7583e0af88a630ee5954e5e14b32324e6ff02e13f26252e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f2058387422f6b2b86a9ed1a975395bbf9a635f33a5c0e7cdd91ce882f94f5ac",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2014-07-30T11:46:21Z",
    "title_canon_sha256": "7624b31b638e5fd207ae0343d627e16d4dd85458ba9086459a09843b60f5876a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1407.8005",
    "kind": "arxiv",
    "version": 1
  }
}