Pith Number

pith:2B5HRT2Q

pith:2017:2B5HRT2Q534SQCNSPIYMMHY5DY

not attested not anchored not stored refs pending

Primal dual mixed finite element methods for the elliptic Cauchy problem

Erik Burman, Lauri Oksanen, Mats. G. Larson

arxiv:1712.10172 v1 · 2017-12-29 · 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{2B5HRT2Q534SQCNSPIYMMHY5DY}

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	2026-05-18T00:27:03.770517Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d07a78cf50eef92809b27a30c61f1d1e3058222f0fa4f9ad7c67888ca7a9bf55

Aliases

arxiv: 1712.10172 · arxiv_version: 1712.10172v1 · doi: 10.48550/arxiv.1712.10172 · pith_short_12: 2B5HRT2Q534S · pith_short_16: 2B5HRT2Q534SQCNS · pith_short_8: 2B5HRT2Q

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/2B5HRT2Q534SQCNSPIYMMHY5DY \
  | 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: d07a78cf50eef92809b27a30c61f1d1e3058222f0fa4f9ad7c67888ca7a9bf55

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8393a365eb4586ecf612b93e256090899b64377703bebd8524dc3fdb4bb36a65",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2017-12-29T10:39:23Z",
    "title_canon_sha256": "0decca5fb721b89b012d8e707c94352ab728dd21ea7c21212571a17b224e30f7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1712.10172",
    "kind": "arxiv",
    "version": 1
  }
}