Pith Number

pith:HGZDJYJK

pith:2016:HGZDJYJKZVTTGDXJ4GRW33RN63

not attested not anchored not stored refs pending

Galerkin least squares finite element method for the obstacle problem

Erik Burman, Mats G. Larson, Peter Hansbo, Rolf Stenberg

arxiv:1609.03431 v1 · 2016-09-12 · 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{HGZDJYJKZVTTGDXJ4GRW33RN63}

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	2026-05-18T00:57:26.046572Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

39b234e12acd67330ee9e1a36dee2df6c3eddf5b315e21e5ad66c84b903c8f9c

Aliases

arxiv: 1609.03431 · arxiv_version: 1609.03431v1 · doi: 10.48550/arxiv.1609.03431 · pith_short_12: HGZDJYJKZVTT · pith_short_16: HGZDJYJKZVTTGDXJ · pith_short_8: HGZDJYJK

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/HGZDJYJKZVTTGDXJ4GRW33RN63 \
  | 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: 39b234e12acd67330ee9e1a36dee2df6c3eddf5b315e21e5ad66c84b903c8f9c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2e004dce4bcefcba167804be138842dbe51ea1e46a77cbc5b38173a2b13bd557",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2016-09-12T14:58:53Z",
    "title_canon_sha256": "c06179748bcb554ecc18ed89b991f0fa0f28ecf3db117e555c099b72d2d08efe"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1609.03431",
    "kind": "arxiv",
    "version": 1
  }
}