Pith Number

pith:AAWWC4YV

pith:2018:AAWWC4YV7QXCMSUU7IWALADS4H

not attested not anchored not stored refs pending

A Robust Hierarchical Solver for Ill-conditioned Systems with Applications to Ice Sheet Modeling

Chao Chen, Eric Darve, Erik G. Boman, Leopold Cambier, Raymond S. Tuminaro, Sivasankaran Rajamanickam

arxiv:1811.11248 v2 · 2018-11-27 · math.NA · 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{AAWWC4YV7QXCMSUU7IWALADS4H}

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	2026-06-04T20:13:43.836683Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

002d617315fc2e264a94fa2c058072e1fe5de9fe020e728b2e3ea80fcd0140c6

Aliases

arxiv: 1811.11248 · arxiv_version: 1811.11248v2 · doi: 10.48550/arxiv.1811.11248 · pith_short_12: AAWWC4YV7QXC · pith_short_16: AAWWC4YV7QXCMSUU · pith_short_8: AAWWC4YV

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/AAWWC4YV7QXCMSUU7IWALADS4H \
  | 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: 002d617315fc2e264a94fa2c058072e1fe5de9fe020e728b2e3ea80fcd0140c6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "33ceedfdde1ce09cb05305657c8e801cf72d344c1773d185050a5f35e3b4dd20",
    "cross_cats_sorted": [
      "cs.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2018-11-27T20:37:51Z",
    "title_canon_sha256": "30a36be46e0b5ca5210acfae76519dfc2f7de5c8ed7f9157a7db08825bdbdf4b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1811.11248",
    "kind": "arxiv",
    "version": 2
  }
}