Pith Number

pith:U5NXP7I7

pith:2012:U5NXP7I7ZWVKYTOF7T36M2M7AG

not attested not anchored not stored refs pending

A note on blow-ups of toric surfaces and cscK metrics

Carl Tipler

arxiv:1203.0854 v2 · 2012-03-05 · math.DG · math.AG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{U5NXP7I7ZWVKYTOF7T36M2M7AG}

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	2026-05-18T03:22:06.271989Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a75b77fd1fcdaaac4dc5fcf7e6699f01960213c39a5b84d75137ca571a46bc6f

Aliases

arxiv: 1203.0854 · arxiv_version: 1203.0854v2 · doi: 10.48550/arxiv.1203.0854 · pith_short_12: U5NXP7I7ZWVK · pith_short_16: U5NXP7I7ZWVKYTOF · pith_short_8: U5NXP7I7

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/U5NXP7I7ZWVKYTOF7T36M2M7AG \
  | 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: a75b77fd1fcdaaac4dc5fcf7e6699f01960213c39a5b84d75137ca571a46bc6f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ae62341073a356c5ea3fb3f01603bace903e8307f7f61fcf49da63457a2b08cb",
    "cross_cats_sorted": [
      "math.AG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2012-03-05T10:38:11Z",
    "title_canon_sha256": "93d0274b463bb7beb079c43f3df13df50c8313476dce13e2dd7c9ce7f9d36fad"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1203.0854",
    "kind": "arxiv",
    "version": 2
  }
}