Pith Number

pith:D2SL2SR5

pith:2013:D2SL2SR5EP623W3QZSMP57UFBN

not attested not anchored not stored refs pending

Mixed Mimetic Spectral Element method applied to Darcy's problem

Artur Palha, Marc Gerritsma, Pedro Pinto Rebelo

arxiv:1304.7147 v2 · 2013-04-26 · 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{D2SL2SR5EP623W3QZSMP57UFBN}

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	2026-05-18T03:16:18.814450Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1ea4bd4a3d23fdaddb70cc98fefe850b592405d24ba88b0f336edda5a1d61f26

Aliases

arxiv: 1304.7147 · arxiv_version: 1304.7147v2 · doi: 10.48550/arxiv.1304.7147 · pith_short_12: D2SL2SR5EP62 · pith_short_16: D2SL2SR5EP623W3Q · pith_short_8: D2SL2SR5

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/D2SL2SR5EP623W3QZSMP57UFBN \
  | 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: 1ea4bd4a3d23fdaddb70cc98fefe850b592405d24ba88b0f336edda5a1d61f26

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "38833dd49eb55b4ce4385f5aa6cf623c8d0180c64f98b3923cc48cd46e4ae5de",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2013-04-26T12:56:37Z",
    "title_canon_sha256": "2844b9ab3e410761fbbe75e252d0c8c40ffc55e7806898ec1ceb4471a071623f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1304.7147",
    "kind": "arxiv",
    "version": 2
  }
}