Pith Number

pith:DRFAS5A3

pith:2018:DRFAS5A3Y2UZF4CPUL2PCWREU2

not attested not anchored not stored refs pending

From modelling of systems with constraints to generalized geometry and back to numerics

Aziz Hamdouni, Vladimir Salnikov

arxiv:1807.06652 v1 · 2018-07-17 · math.NA · cs.NA · math.DG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{DRFAS5A3Y2UZF4CPUL2PCWREU2}

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	2026-05-18T00:10:27.268840Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1c4a09741bc6a992f04fa2f4f15a24a6a5dca836af531f4fea4a666e8b51a5a3

Aliases

arxiv: 1807.06652 · arxiv_version: 1807.06652v1 · doi: 10.48550/arxiv.1807.06652 · pith_short_12: DRFAS5A3Y2UZ · pith_short_16: DRFAS5A3Y2UZF4CP · pith_short_8: DRFAS5A3

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/DRFAS5A3Y2UZF4CPUL2PCWREU2 \
  | 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: 1c4a09741bc6a992f04fa2f4f15a24a6a5dca836af531f4fea4a666e8b51a5a3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "24dfa35d915b7779572bec8f526b1001dd10ea835768c29cf56acfbdca5cf6e2",
    "cross_cats_sorted": [
      "cs.NA",
      "math.DG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2018-07-17T20:15:40Z",
    "title_canon_sha256": "53d309f01f39a85852e879cd79a9d7aacf4eb4e4a34d4876ae076e22fbdd048f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1807.06652",
    "kind": "arxiv",
    "version": 1
  }
}