Pith Number

pith:QZ6U7VQ3

pith:2018:QZ6U7VQ365H4KAVUHLBAQKWBZX

not attested not anchored not stored refs pending

A priori and a posteriori error estimation for finite element approximation of advection-diffusion-reaction equation with spatially variable coefficients

Manisha Chowdhury, Prof. B.V. Rathish Kumar

arxiv:1811.05283 v1 · 2018-11-13 · math.AP

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{QZ6U7VQ365H4KAVUHLBAQKWBZX}

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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	2026-05-18T00:00:46.449425Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

867d4fd61bf74fc502b43ac2082ac1cdedef7810cc2e298028fa3b4f81073b3f

Aliases

arxiv: 1811.05283 · arxiv_version: 1811.05283v1 · doi: 10.48550/arxiv.1811.05283 · pith_short_12: QZ6U7VQ365H4 · pith_short_16: QZ6U7VQ365H4KAVU · pith_short_8: QZ6U7VQ3

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/QZ6U7VQ365H4KAVUHLBAQKWBZX \
  | 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: 867d4fd61bf74fc502b43ac2082ac1cdedef7810cc2e298028fa3b4f81073b3f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "210b27e4849e8880e04d0bd42117949a5de6c52951d31222313352ea48eae0d2",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/publicdomain/zero/1.0/",
    "primary_cat": "math.AP",
    "submitted_at": "2018-11-13T13:34:47Z",
    "title_canon_sha256": "0f29c1347471964a7dd7b30c3ebd41b90be73087decdb8ccbbe63d2e9584c8f0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1811.05283",
    "kind": "arxiv",
    "version": 1
  }
}