Pith Number

pith:7YFV3FIG

pith:2019:7YFV3FIGTFVWVHZO6LYKFRPN2D

not attested not anchored not stored refs pending

Block Preconditioners for Mixed-dimensional Discretization of Flow in Fractured Porous Media

Ana Budi\v{s}a, Xiaozhe Hu

arxiv:1905.13513 v1 · 2019-05-31 · 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{7YFV3FIGTFVWVHZO6LYKFRPN2D}

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	2026-05-17T23:44:34.740848Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fe0b5d9506996b6a9f2ef2f0a2c5edd0c57332a6d2e67c611b5ed75c04dba884

Aliases

arxiv: 1905.13513 · arxiv_version: 1905.13513v1 · doi: 10.48550/arxiv.1905.13513 · pith_short_12: 7YFV3FIGTFVW · pith_short_16: 7YFV3FIGTFVWVHZO · pith_short_8: 7YFV3FIG

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/7YFV3FIGTFVWVHZO6LYKFRPN2D \
  | 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: fe0b5d9506996b6a9f2ef2f0a2c5edd0c57332a6d2e67c611b5ed75c04dba884

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f44172d879c431a0e59140861fa416f074a8948e8f808579b0c422468d95075b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2019-05-31T11:14:54Z",
    "title_canon_sha256": "fd76cb89bec9feeed6165fb5e0b1c175049d1d4242a00c8e73823ef93d28a82d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1905.13513",
    "kind": "arxiv",
    "version": 1
  }
}