Pith Number

pith:VSTJPHR2

pith:2016:VSTJPHR2UDUT3Z33FRVA3J5Z7G

not attested not anchored not stored refs pending

Algebraic Multigrid Preconditioners for Multiphase Flow in Porous Media

Howard C. Elman, J.D. Moulton, Quan M. Bui

arxiv:1611.00127 v1 · 2016-11-01 · math.NA · cs.CE · cs.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{VSTJPHR2UDUT3Z33FRVA3J5Z7G}

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	2026-05-18T00:25:07.949096Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

aca6979e3aa0e93de77b2c6a0da7b9f987c4bb967442ea716429e7064a44b3b0

Aliases

arxiv: 1611.00127 · arxiv_version: 1611.00127v1 · doi: 10.48550/arxiv.1611.00127 · pith_short_12: VSTJPHR2UDUT · pith_short_16: VSTJPHR2UDUT3Z33 · pith_short_8: VSTJPHR2

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/VSTJPHR2UDUT3Z33FRVA3J5Z7G \
  | 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: aca6979e3aa0e93de77b2c6a0da7b9f987c4bb967442ea716429e7064a44b3b0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a3e7f140ce1f1d5fad2b5af9890e43563768565bf6adf92b3b196df13843f918",
    "cross_cats_sorted": [
      "cs.CE",
      "cs.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2016-11-01T04:52:47Z",
    "title_canon_sha256": "c9aefba494827912a08391e83c0dee37aece66a29485279e52a6b16767688b59"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1611.00127",
    "kind": "arxiv",
    "version": 1
  }
}