Pith Number

pith:KT7LQZX2

pith:2017:KT7LQZX2V5DAQIO3O4KIDRZE2E

not attested not anchored not stored refs pending

Robust Block Preconditioners for Biot's Model

Carmen Rodrigo, Francisco J. Gaspar, James H. Adler, Ludmil T. Zikatanov, Xiaozhe Hu

arxiv:1705.08842 v1 · 2017-05-24 · 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{KT7LQZX2V5DAQIO3O4KIDRZE2E}

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	2026-05-18T00:43:44.107775Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

54feb866faaf460821db771481c724d1344ed4d546a832be3af29595bc5a7470

Aliases

arxiv: 1705.08842 · arxiv_version: 1705.08842v1 · doi: 10.48550/arxiv.1705.08842 · pith_short_12: KT7LQZX2V5DA · pith_short_16: KT7LQZX2V5DAQIO3 · pith_short_8: KT7LQZX2

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/KT7LQZX2V5DAQIO3O4KIDRZE2E \
  | 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: 54feb866faaf460821db771481c724d1344ed4d546a832be3af29595bc5a7470

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "83e4fd48af1308e32dd45a92c9a0fb039185da0dda533ff7dc22fc925b7cd793",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2017-05-24T16:16:50Z",
    "title_canon_sha256": "4e55aa77a02edd27d764826aef4480e3e47cebe32f8bacecd79654aa6e6ad7c8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1705.08842",
    "kind": "arxiv",
    "version": 1
  }
}