Pith Number

pith:GE6QLPYO

pith:2019:GE6QLPYOWPOSVXF4JNRVYC2UJN

not attested not anchored not stored refs pending

A sequential least squares method for elliptic equations in non-divergence form

Fanyi Yang, Ruo Li

arxiv:1906.03754 v3 · 2019-06-10 · 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{GE6QLPYOWPOSVXF4JNRVYC2UJN}

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	2026-07-05T00:52:05.948854Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

313d05bf0eb3dd2adcbc4b635c0b544b745114601343e7ab6c9aecb7bb029253

Aliases

arxiv: 1906.03754 · arxiv_version: 1906.03754v3 · doi: 10.48550/arxiv.1906.03754 · pith_short_12: GE6QLPYOWPOS · pith_short_16: GE6QLPYOWPOSVXF4 · pith_short_8: GE6QLPYO

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/GE6QLPYOWPOSVXF4JNRVYC2UJN \
  | 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: 313d05bf0eb3dd2adcbc4b635c0b544b745114601343e7ab6c9aecb7bb029253

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "766930e7e96e26ba8233d092353fea2ddb10c156163ac3a4d274a0385ac77bd5",
    "cross_cats_sorted": [
      "cs.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2019-06-10T01:18:29Z",
    "title_canon_sha256": "328f90994cf0a1d6a02019be7ec0334c1cd61f530874d5b440fc41ff5e9ac79f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1906.03754",
    "kind": "arxiv",
    "version": 3
  }
}