Pith Number

pith:NCHN653W

pith:2019:NCHN653WYGLEEJCXCV453DS6JG

not attested not anchored not stored refs pending

Blowup for the nonlinear heat equation with small initial data in scale-invariant Besov norms

Fernando Cortez, Lorenzo Brandolese (ICJ)

arxiv:1902.06302 v1 · 2019-02-17 · 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{NCHN653WYGLEEJCXCV453DS6JG}

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	2026-05-17T23:53:45.932627Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

688edf7776c1964224571579dd8e5e498dfc266e4770811e33d8d0b1e2f205d3

Aliases

arxiv: 1902.06302 · arxiv_version: 1902.06302v1 · doi: 10.48550/arxiv.1902.06302 · pith_short_12: NCHN653WYGLE · pith_short_16: NCHN653WYGLEEJCX · pith_short_8: NCHN653W

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/NCHN653WYGLEEJCXCV453DS6JG \
  | 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: 688edf7776c1964224571579dd8e5e498dfc266e4770811e33d8d0b1e2f205d3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3432216c2bb86ec887a6cc93d295175f33364baf041d5e52a96e7a58a2bd8ce4",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AP",
    "submitted_at": "2019-02-17T18:15:56Z",
    "title_canon_sha256": "ad15df70da3206b1c0f0e16b8bf2501c3a693b95ce378878a353d7bfb12539c6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1902.06302",
    "kind": "arxiv",
    "version": 1
  }
}