Pith Number

pith:TTMWSOYC

pith:2011:TTMWSOYC66O33XZCHYR2AAIELK

not attested not anchored not stored refs pending

Nested BDDC for a saddle-point problem

Bed\v{r}ich Soused\'ik

arxiv:1109.0580 v2 · 2011-09-03 · 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{TTMWSOYC66O33XZCHYR2AAIELK}

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	2026-05-18T02:47:31.809438Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9cd9693b02f79dbddf223e23a001045a9de5fa3baea73b7a3ea1c9dd0f87d5ff

Aliases

arxiv: 1109.0580 · arxiv_version: 1109.0580v2 · doi: 10.48550/arxiv.1109.0580 · pith_short_12: TTMWSOYC66O3 · pith_short_16: TTMWSOYC66O33XZC · pith_short_8: TTMWSOYC

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/TTMWSOYC66O33XZCHYR2AAIELK \
  | 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: 9cd9693b02f79dbddf223e23a001045a9de5fa3baea73b7a3ea1c9dd0f87d5ff

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "74cad3e1b3d0409b4c50831d1756cfa2eef1f8d1127eebd4799a9a464d953592",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2011-09-03T00:51:32Z",
    "title_canon_sha256": "7843a9d3377244e7336ea4904b3d97622eefb736a0f31e32e256d88938401a40"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1109.0580",
    "kind": "arxiv",
    "version": 2
  }
}