Pith Number

pith:AFT4AAW2

pith:2015:AFT4AAW2WM46HSAKIH5FBVC4BN

not attested not anchored not stored refs pending

On regularity of the time derivative for degenerate parabolic systems

Jens Frehse, Sebastian Schwarzacher

arxiv:1501.04876 v1 · 2015-01-20 · math.AP

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{AFT4AAW2WM46HSAKIH5FBVC4BN}

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	2026-05-18T02:29:02.066722Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0167c002dab339e3c80a41fa50d45c0b78f2a17f6fa538fcedb7bc9941e5924a

Aliases

arxiv: 1501.04876 · arxiv_version: 1501.04876v1 · doi: 10.48550/arxiv.1501.04876 · pith_short_12: AFT4AAW2WM46 · pith_short_16: AFT4AAW2WM46HSAK · pith_short_8: AFT4AAW2

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/AFT4AAW2WM46HSAKIH5FBVC4BN \
  | 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: 0167c002dab339e3c80a41fa50d45c0b78f2a17f6fa538fcedb7bc9941e5924a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "af950609c4c08492551be4053d4612d3736ba47aa9fb81dd3905a7303d9f6451",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AP",
    "submitted_at": "2015-01-20T16:44:26Z",
    "title_canon_sha256": "42bcc4cba91ed779fea113670932d81d6dfb6316cb9ce07a0ed3ef99b3f1f15a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1501.04876",
    "kind": "arxiv",
    "version": 1
  }
}