Pith Number

pith:ZIWLSSLH

pith:2013:ZIWLSSLHK3XNYYHUHVTKF4MWMO

not attested not anchored not stored refs pending

Cascadic Multilevel Algorithms for Symmetric Saddle Point Systems

Constantin Bacuta

arxiv:1305.2449 v1 · 2013-05-10 · 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{ZIWLSSLHK3XNYYHUHVTKF4MWMO}

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	2026-05-18T03:25:57.833839Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ca2cb9496756eedc60f43d66a2f19663b4c70df6fb780eae026f46a2d2a3c9c7

Aliases

arxiv: 1305.2449 · arxiv_version: 1305.2449v1 · doi: 10.48550/arxiv.1305.2449 · pith_short_12: ZIWLSSLHK3XN · pith_short_16: ZIWLSSLHK3XNYYHU · pith_short_8: ZIWLSSLH

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/ZIWLSSLHK3XNYYHUHVTKF4MWMO \
  | 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: ca2cb9496756eedc60f43d66a2f19663b4c70df6fb780eae026f46a2d2a3c9c7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "91585225c19591d59de1e57b107e6d4dabe634308e37f49e30417bfc2825eb95",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2013-05-10T22:31:33Z",
    "title_canon_sha256": "8a224e8786f4e1533e79068cc9e888a776e42e3a855e5fb10f42a8f0d853364f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1305.2449",
    "kind": "arxiv",
    "version": 1
  }
}