Pith Number

pith:JP7OM7ZG

pith:2015:JP7OM7ZGTCZNZG32LO73AFSMTO

not attested not anchored not stored refs pending

On Chern-Yamabe problem

Cristiano Spotti, Daniele Angella, Simone Calamai

arxiv:1501.02638 v2 · 2015-01-12 · math.DG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{JP7OM7ZGTCZNZG32LO73AFSMTO}

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	2026-05-18T00:36:10.205723Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4bfee67f2698b2dc9b7a5bbfb0164c9bbc3ba4684abd2c194d064f780cfcf626

Aliases

arxiv: 1501.02638 · arxiv_version: 1501.02638v2 · doi: 10.48550/arxiv.1501.02638 · pith_short_12: JP7OM7ZGTCZN · pith_short_16: JP7OM7ZGTCZNZG32 · pith_short_8: JP7OM7ZG

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/JP7OM7ZGTCZNZG32LO73AFSMTO \
  | 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: 4bfee67f2698b2dc9b7a5bbfb0164c9bbc3ba4684abd2c194d064f780cfcf626

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c7d8c70bfba9ec5eb123bb7ee6b520fa0452ac69d2898a51b17fcb0a83a5a416",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2015-01-12T13:37:26Z",
    "title_canon_sha256": "f62b641a3faecb0c7f3db2311cf5674a0af4a8c9a7ba1db3e6894241734dcf2c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1501.02638",
    "kind": "arxiv",
    "version": 2
  }
}