Pith Number

pith:EXV2IFEO

pith:2016:EXV2IFEOD5ESPUJKT35R2KUUXH

not attested not anchored not stored refs pending

Projective toric generators in the unitary cobordism ring

Grigory Solomadin, Yury Ustinovskiy

arxiv:1602.02448 v2 · 2016-02-08 · math.AT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{EXV2IFEOD5ESPUJKT35R2KUUXH}

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	2026-05-18T00:44:09.835076Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

25eba4148e1f4927d12a9efb1d2a94b9e19c64e4c0f4fa9bffe6208f9c2330ed

Aliases

arxiv: 1602.02448 · arxiv_version: 1602.02448v2 · doi: 10.48550/arxiv.1602.02448 · pith_short_12: EXV2IFEOD5ES · pith_short_16: EXV2IFEOD5ESPUJK · pith_short_8: EXV2IFEO

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/EXV2IFEOD5ESPUJKT35R2KUUXH \
  | 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: 25eba4148e1f4927d12a9efb1d2a94b9e19c64e4c0f4fa9bffe6208f9c2330ed

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "efc248619631cd5f5c45856c1a59875eb8c220178f3cb7e6c71e0ce39a289038",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AT",
    "submitted_at": "2016-02-08T01:40:25Z",
    "title_canon_sha256": "086a960f5196fe343940baef36950d0dd116a4430124da9cc144c6c4a7f33c46"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1602.02448",
    "kind": "arxiv",
    "version": 2
  }
}