Pith Number

pith:QF3WDIPV

pith:2016:QF3WDIPVUNBXWMCLYAQHDSLFHJ

not attested not anchored not stored refs pending

A FEM approximation of a two-phase obstacle problem and its a posteriori error estimate

Farid Bozorgnia, Jan Valdman

arxiv:1606.01020 v1 · 2016-06-03 · 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{QF3WDIPVUNBXWMCLYAQHDSLFHJ}

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	2026-05-18T01:12:59.415243Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

817761a1f5a3437b304bc02071c9653a77790c9b8503997b1673204fe7357c04

Aliases

arxiv: 1606.01020 · arxiv_version: 1606.01020v1 · doi: 10.48550/arxiv.1606.01020 · pith_short_12: QF3WDIPVUNBX · pith_short_16: QF3WDIPVUNBXWMCL · pith_short_8: QF3WDIPV

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/QF3WDIPVUNBXWMCLYAQHDSLFHJ \
  | 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: 817761a1f5a3437b304bc02071c9653a77790c9b8503997b1673204fe7357c04

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1b620e960f6c084eb83dc0df525d57b362e0ab3ea82830671565cd58809ed2d2",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2016-06-03T09:46:41Z",
    "title_canon_sha256": "845cb216200b04096193ab1cdde756ff91dbfb4c2438dab643f75f3255d3e7eb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1606.01020",
    "kind": "arxiv",
    "version": 1
  }
}