Pith Number

pith:COCGTMYP

pith:2017:COCGTMYPYBJ4WTQH4EFASCNLAQ

not attested not anchored not stored refs pending

Index Reduction for Differential-Algebraic Equations with Mixed Matrices

Mizuyo Takamatsu, Satoru Iwata, Taihei Oki

arxiv:1712.02582 v2 · 2017-12-07 · math.OC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{COCGTMYPYBJ4WTQH4EFASCNLAQ}

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	2026-05-17T23:42:49.106253Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

138469b30fc053cb4e07e10a0909ab042557607238634ce9a65d8ec5f20a14cb

Aliases

arxiv: 1712.02582 · arxiv_version: 1712.02582v2 · doi: 10.48550/arxiv.1712.02582 · pith_short_12: COCGTMYPYBJ4 · pith_short_16: COCGTMYPYBJ4WTQH · pith_short_8: COCGTMYP

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/COCGTMYPYBJ4WTQH4EFASCNLAQ \
  | 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: 138469b30fc053cb4e07e10a0909ab042557607238634ce9a65d8ec5f20a14cb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "20a3f7400efaafb2e31af1f0ca45ddfc40b5bfd0c595a7f4043c6c13db969a69",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2017-12-07T12:18:17Z",
    "title_canon_sha256": "8d39e08eca452bd126577c5babee2265ba4dd0fe1fee32f49a59976a4fe23b7c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1712.02582",
    "kind": "arxiv",
    "version": 2
  }
}