Pith Number

pith:QQWC4MEV

pith:2013:QQWC4MEVFLGPQ4KVVHKXDZNOUE

not attested not anchored not stored refs pending

An analysis of HDG methods for convection dominated diffusion problems

Guosheng Fu, Weifeng Qiu, Wujun Zhang

arxiv:1310.0887 v2 · 2013-10-03 · 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{QQWC4MEVFLGPQ4KVVHKXDZNOUE}

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	2026-05-18T02:56:35.046712Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

842c2e30952accf87155a9d571e5aea11dce4cfef3257dc20a2fc1ed746d9e1b

Aliases

arxiv: 1310.0887 · arxiv_version: 1310.0887v2 · doi: 10.48550/arxiv.1310.0887 · pith_short_12: QQWC4MEVFLGP · pith_short_16: QQWC4MEVFLGPQ4KV · pith_short_8: QQWC4MEV

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/QQWC4MEVFLGPQ4KVVHKXDZNOUE \
  | 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: 842c2e30952accf87155a9d571e5aea11dce4cfef3257dc20a2fc1ed746d9e1b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "070fbe63cfa84d1635ded1a01638570051c76dc0784077aaad63593c26d965a7",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2013-10-03T03:33:34Z",
    "title_canon_sha256": "04ad8d172b34e3290ae66e1672e62ac4732a2fd05db962907915edda007e60fe"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1310.0887",
    "kind": "arxiv",
    "version": 2
  }
}