Object class: Euclid
No numerals, ordinals, or other words indicative of a singular, finite value may be used in any documentation related to this anomaly. SCP-𝕐 is not to be assigned any numerical metrics, even for cataloguing purposes, including Disruption and Risk Classes. This also includes the standard numerical classification, which has been replaced with the Unicode character described as "Blackboard Bold Uppercase Y" (𝕐).
Information about this anomaly must be stored inside a virtual software box built to utilize a non-numerical coding system and rendering engine specifically built for this purpose, known as the RGU-𝕐 system. This system is to be installed at Foundation Infohazard Containment Site-♃, which specializes in containment via alternative-text and non-textual methods.
The knowledge of the nonexistence SCP-𝕐-A is to be monitored in the general population. Individuals who discover the nonexistence of SCP-𝕐-A must be treated with amnestics. The use of memetic textual deterrents ("mipsum") may be utilized to hide discovered discrepancies.
Within the period approximately equal to a full rotation of the Earth, The RGU-𝕐 system must be activated, which will generate a random number of sufficiently large value as to be statistically improbable that this number will be utilized for any purpose by humans in the foreseeable future. This number will then be added to the end of this containment file.
If several days pass without being "fed", SCP-𝕐 consumes a number at random, resulting in potential catastrophic consequences for financial, computing, and other mathematics-derivative fields of science.
In effect, the processes protecting this containment file are the same processes containing SCP-𝕐.
SCP-𝕐's existence is intrinsically tied to baseline reality. The anomalous effect of RGU-𝕐 manifests when numbers of any value are associated with it. When a number is exposed to SCP-𝕐, the number is added to the set in question, causing it to cease existing. A number which ceases to exist is unable to be processed, displayed, or even conceptualized. This missing number can easily be overlooked as the human consciousness will often fill in the missing data involuntarily. Discovery of the absent number will, however, induce some manner of mental strain and should be avoided if possible.
SCP-𝕐's relationship to other anomalies is under investigation.The effect of exposure to SCP-𝕐 appears to have some limitations, as discovered through informal and formal testing:
SCP-𝕐 was first theorized by famous mathematician ███████ ███ in the same year the Summer Olympics were held in Atlanta, Georgia. In a mathematics essay distributed among the Mathematics department of the University of Calgary, Dr. ███ theorized the following:
As of yet, it has not been determined whether this theory, or Dr. ███'s work afterward, induced the subsequent manifestation of SCP-𝕐, but operatives in the University later uncovered the anomalous set and its effects, and developed protocols to contain it.
During containment, a very small amount of numbers were affected by SCP-𝕐. The total amount is unknown. See section titled "SCP-𝕐-A".
Testing process consisted of the following:
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INPUT: g is an unmodified number. g is fed to SCP-𝕐.
RESULT: Full data loss detected: g ceases to exist.
RESEARCHER NOTE: Baseline result.
INPUT: All the digits of a certain number, gg, followed immediately by the digits of another number, hh, are concatenated into a combined number, gghh. gghh is fed to SCP-𝕐. The smaller numbers are not fed to SCP-𝕐.
RESULT: Partial data loss detected: gghh ceases to exist. gg and hh are unaffected.
RESEARCHER NOTE: It's safe to assume that constituent digits are not impacted. That's a relief.
INPUT: g turned into an ordinal number by appending "th" to the end of it. go is fed to SCP-𝕐.
RESULT: Full data loss detected: g ceases to exist.
RESEARCHER NOTE: It appears the result is tied to the value, rather than cardinality, of the number.
INPUT: g is described without numbers, using non-numerical words. The description, which is incredibly long, is fed to SCP-𝕐.
RESULT: No data loss detected.
RESEARCHER NOTE: It seems that if you use enough non-numbers to describe the value you're referencing, SCP-𝕐 cannot affect it. This is useful for the completion of this containment file.
INPUT: The name of an individual, whose surname is also a relatively low-value number, is to be fed to SCP-𝕐.
RESULT: Test not performed
RESEARCHER NOTE: I theorize SCP-𝕐 would have been able to differentiate between when a numerical term is being used to represent a numerical value, and when it is not. But we can't take that chance.
INPUT: A D-Class personnel is assigned a large number, g. D-g is made aware, through an audio recording lasting several hours, that this is her new designation. g is fed to SCP-𝕐.
RESULT: Full data loss detected: g ceases to exist. D-g suffers a violent █████████.
RESEARCHER NOTE: Tests are suspended until further notice.
RESEARCHER: DR. TREYVON BUCKHANON
During the initial containment of SCP-𝕐, a Foundation operative assigned the anomaly a standard item designation, ����, thinking that as long as the number was not added to the containment file, it would be safe to do so. He was wrong.
When this number ceased to exist, it caused extensive infrastructure outages worldwide for a short time. Foundation digital response teams were able to restore functionality to many systems before too long, by creating an algorithm that sort of...rounds everything upward or downward by a certain amount so computers don't notice it's missing.
But it is missing, and every day that rounding causes system errors and rounding problems in every computer system in the world. Crashes and malfunctions that cause problems in everything from calculators to mobile phones to nuclear weapon silos. Cleaning up the loss of this one number takes round-the-clock work of a team of mathematicians and digital engineers.
If SCP-𝕐 were to breach again, we simply don't know if the world's infrastructure could take it.