Pith Number

pith:FBBRLJVZ

pith:2013:FBBRLJVZOMDZNZ3DC5BWTY66DX

not attested not anchored not stored refs pending

First order least squares method with weakly imposed boundary condition for convection dominated diffusion problems

Guosheng Fu, Huangxin Chen, Jingzhi Li, Weifeng Qiu

arxiv:1309.7108 v4 · 2013-09-27 · 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{FBBRLJVZOMDZNZ3DC5BWTY66DX}

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	2026-05-18T02:40:54.231411Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

284315a6b9730796e763174369e3de1dfbbe0073ea914d8164591b01c4b39da8

Aliases

arxiv: 1309.7108 · arxiv_version: 1309.7108v4 · doi: 10.48550/arxiv.1309.7108 · pith_short_12: FBBRLJVZOMDZ · pith_short_16: FBBRLJVZOMDZNZ3D · pith_short_8: FBBRLJVZ

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/FBBRLJVZOMDZNZ3DC5BWTY66DX \
  | 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: 284315a6b9730796e763174369e3de1dfbbe0073ea914d8164591b01c4b39da8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d354668e46534ed1f5095b31c3398fc64784b705cca6e4aa686287a9456fc1f3",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2013-09-27T03:40:59Z",
    "title_canon_sha256": "315d5f07fe682d643776489effea3f802ee6051f86e533fcce58377d3c9f2a4b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1309.7108",
    "kind": "arxiv",
    "version": 4
  }
}