Pith Number

pith:QNL4CMVK

pith:2015:QNL4CMVKSNNELBDXXSDNQM5GVL

not attested not anchored not stored refs pending

Energy-norm error estimates for finite element discretization of parabolic problems

Herbert Egger

arxiv:1507.05183 v1 · 2015-07-18 · 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{QNL4CMVKSNNELBDXXSDNQM5GVL}

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	2026-05-18T01:36:39.357468Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8357c132aa935a458477bc86d833a6aae8a7d2ad8bba8ae17c7810c7b95d791d

Aliases

arxiv: 1507.05183 · arxiv_version: 1507.05183v1 · doi: 10.48550/arxiv.1507.05183 · pith_short_12: QNL4CMVKSNNE · pith_short_16: QNL4CMVKSNNELBDX · pith_short_8: QNL4CMVK

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/QNL4CMVKSNNELBDXXSDNQM5GVL \
  | 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: 8357c132aa935a458477bc86d833a6aae8a7d2ad8bba8ae17c7810c7b95d791d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f199febdca1da18f06ae23317c004f0d3dc61d957ddbc0b651ba8de8a2994a97",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2015-07-18T13:11:27Z",
    "title_canon_sha256": "9828a8344e6429789b85c5c4c44c20291712e5a4423eb5da51270fba6bb02768"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1507.05183",
    "kind": "arxiv",
    "version": 1
  }
}